Scientists discovered a fossil in China that belongs to a previously unknown species of an obscure group of small dinosaurs, related to primitive birds such as the famous Archaeopteryx. It had feathers, but they seemed too insubstantial to be useful in flight. Then the scientists said they recognized the unusually long, rod-like bone extending from each of the two wrists: curving structures possibly supporting an aerodynamic membrane. These scientists are grouping the found fossil with birds, based on ________ structures.

Answers

Answer 1

Answer:

Physical.

Explanation:

These scientists group the found fossil with birds on the basis of physical structures because first the scientists relate the fossil to the feathers of the bird and later the scientists relate it to the bone structure to determine the resemblance between the birds and the fossil of an obscure group of small dinosaurs so we can conclude that the scientists observe the found fossil on the basis of physiological characteristics of that fossil.


Related Questions

Don't search write in your own words please I have a lot of different work​

Answers

Mullerian mimicry is a type of mimicry found in nature in which two or more species of animals have evolved to share similar warning signals to potential predators.

What is mimicry?

Mimicry is a behavior in which an animal or person imitates the behavior or appearance of another animal or person. Mimicry can be used for protection, deception, or to attract members of the same species. Examples of mimicry include a bird imitating the call of another species, or a person imitating the behavior of someone else to fit in.

This type of mimicry is named after the German biologist Johann Friedrich Theodor Muller who first described it in 1878. The purpose of this type of mimicry is to increase the effectiveness of the warning signal by making it more likely that predators will recognize it and avoid the mimicking species.

Chemical toxins

Chemical toxins are chemical substances that are toxic to living organisms. They can be naturally occurring, such as toxic metals or plant toxins, or artificially created, such as pesticides or industrial chemicals. Chemical toxins can have a variety of effects on organisms, ranging from mild irritation to death.

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which of these is a structural adaptation a.) a pointed beak b.) swarming, c.) the ability to hunt, d.) migrating

Answers

Explanation:

Option A is the correct i.e a pointed beak .

La meteorizacion mecánica se lleva a cabo por fuerzas físicas mientras que la meteorizacion química transforma en compuestos nuevos la roca.

Answers

Answer:

Si.

Explicación:

La meteorización mecánica transforma la roca mediante el uso de fuerzas físicas, mientras que la meteorización química transforma la roca en nuevos compuestos con el uso de productos químicos. Hay ciertos productos químicos que rompen los enlaces entre las partículas de roca que conducen a la erosión de la roca. Los productos químicos presentes en la lluvia y el agua en movimiento que reaccionan con las rocas y los minerales cuando entran en contacto provocan que la roca cambie o debilite.

A young goat has downward-curved horns. Its father has upward-curved horns while its mother has downward-curved horns. Which of these statements is the explanation?

Answers

A young goat has downward-curved horns. One copy of the gene for horn shape was passed down to the young goat from its father and one copy from its mother is the explanation.

A ratio of dominant to recessive traits is the result of the gene combination from the parents, as stated by Mendel's second law of inheritance, which states that a pair of traits segregate independently of another pair during gamete formation. In phenotype sharing, the offspring will only exhibit the dominant trait when parents with required traits are crossed together. This suggests that the dominant mother and not the dominant father passed on the horn-shaped gene to the young goat.

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What were Mendel's 3 important choices?

Answers

Answer:

The law of segregation, the law of dominance, and the law of independent assortment

Explanation:

He formulated several basic genetic laws, including the law of segregation, the law of dominance, and the law of independent assortment

What was Mendel's hypothesis?

Answers

Mendel proposed that allele pairs randomly segregate from one another when the gametes are being produced in the seed plant (egg cell) and pollen plant (sperm). A sperm or an egg only contains one copy of each allele for each inherited characteristic because allele pairs split apart during gamete development.

Mendel's idea proposed that genes arrive in pairs and are inherited from each parent as independent entities. Mendel observed how parental genes separated and if they showed up as dominant or recessive features in children. He discovered patterns of heredity passed down mathematically from one generation to the next.

He put up the particle inheritance idea as a substitute theory. The inherited phenotypes, according to his prediction, do not converge across generations. Instead, he proposed that the progeny get distinct "particles."

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Where is ground tissue found in a plant?
In the soft parts of leaves, stems, and roots
On the entire outer surface of the plant
At the tips of shoots and root caps
In clusters of vascular bundles in the stems

Answers

Answer:

The ground tissue system is found within each plant organ. Within leaves, the ground tissue system consists of palisade mesophyll, which are tightly compacted cells that are the site of photosynthesis. Within plant stems, the ground tissue consists of the cortex (outer stem layer) and pith (spongy stem center).

Explanation:

Answer:

in the soft parts of leaves, stems, and roots

Explanation:

where were fossils found in the mississippian time period

Answers

Answer:

Mississippian fossils are abundant in portions of the Midwest and South and include vast beds of limestone and marble.

Explanation:

For example, the domed ceiling of the Jefferson Memorial in Washington, D.C., is made of Indiana limestone that was deposited during the Mississippian Period.By the end of the Carboniferous, reptiles had migrated well toward the interior of Pangea. These early pioneers went on to spawn the archosaurs, pelycosaurs, and therapsids of the ensuing Permian period. (It was the archosaurs that went on to spawn the first dinosaurs nearly a hundred million years later.)

The viscosity of the synovial fluid is due to synoviocyte secretion of mucopolysaccharide, which contains:

Answers

The viscosity of the synovial fluid is due to the secretion of mucopolysaccharides by synoviocytes. These mucopolysaccharides are composed of hyaluronic acid, chondroitin sulphate, and heparin sulphate.

The viscosity of synovial fluid is due to the secretion of mucopolysaccharides (MPS) by synoviocytes. These MPS are composed of three main components: hyaluronic acid, chondroitin sulphate, and heparin sulphate. Hyaluronic acid is a linear polysaccharide that is an essential component of the extracellular matrix of the joint. It plays an important role in lubricating and cushioning the joint, and it is believed to be responsible for the viscosity of the synovial fluid.

Chondroitin sulphate, another component of the MPS, is a glycosaminoglycan that helps to maintain the structural integrity of the joint and acts as a shock absorber. Lastly, heparin sulphate is a polysaccharide that helps to regulate the coagulation of the synovial fluid, thus preventing it from becoming too thick.

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Complete the blanks by matching with one of the given terms - A molecule moves down its concentration gradient by passive transport, but requires _________ transport to move up its concentration gradient. - Transporter proteins and ion channels function in membrane transport by providing a ______ pathway through the membrane for specific polar solutes or inorganic ions. - __________ are highly selective in the solutes they transport, binding the solute at a specific site and changing conformation so as to transport the solute across the membran

Answers

Answer:

active

hydrophilic

Transporters

Explanation:

A molecule moves down its concentration gradient by passive transport, but requires active transport to move up its concentration gradient. - Transporter proteins and ion channels function in membrane transport by providing a hydrophilic pathway through the membrane for specific polar solutes or inorganic ions. - Transporters are highly selective in the solutes they transport, binding the solute at a specific site and changing conformation so as to transport the solute across the membrane.

How do you think acid rain is forming

Answers

Answer:

acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide

What would happen if the active site of an enzyme has a different shape ?

Answers

If the enzyme changes shape, the active site may no longer be able to bind to the right substrate, which would slow down the activity. In response to abrupt pH and temperature fluctuations, enzymes eventually denature.

Enzymes accelerate processes by reducing the activation energy of certain reactions, just like other catalysts do. The rate of substrate to product conversion can be multiplied by ten by some enzymes. Orotidine 5'-phosphate carboxylase is an extreme example, accelerating a reaction from millions of years to milliseconds. Enzymes are similar to any catalyst chemically speaking and neither consume substances in chemical reactions nor change the equilibrium of a reaction. Enzymes are much more specialized catalysts than the majority of other catalysts.

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Why is eating a well balanced healthy diet important? What are some of the consequences or risks to an unhealthy diet?

*1 paragraph answer*

Answers

A balanced diet is necessary for both good nutrition and health. Over time, poor nutrition can increase the chance of contracting certain diseases and other health issues, as well as stress, fatigue, and our ability to function.

Why is eating a well balanced healthy diet important?

A balanced diet is necessary for both good nutrition and health. You are shielded from a variety of degenerative noncommunicable diseases, including cancer, diabetes, and heart disease.

A balanced diet that limits salt, sugar, saturated fats, and trans fats from industrial production is crucial for good health.

How Does Poor Nutrition Affect Us?

Our capacity to live a fulfilling and active life can be hampered by poor nutrition, which can also affect our everyday health and wellness.

Over time, poor nutrition can increase the risk of contracting certain diseases and other health issues, such as being overweight or obese or having tooth decay. In the short term, poor nutrition can increase tension, fatigue, and our ability to work. blood pressure is high. elevated cholesterol Type-2 diabetes, heart disease, stroke, osteoporosis, and certain malignancies disordered eating and depression.

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The pump is dictating rather than facilitating your work. The pump could malfunction. There is no risk associated with the pump. A and B (The pump is dictating rather than facilitating your work AND The pump could malfunction)

Answers

The pump is essentially controlling the process instead of helping it. This means that the pump is not providing any assistance with the work, but is instead taking control of the process and not allowing any manual intervention.

This can be a problem because the pump could malfunction, which would mean that the process would be stopped in its tracks. If the pump malfunctions, it could be difficult or impossible to repair it and the process could be stalled until a new pump is brought in. This means that the process would be disrupted and could take a long time to get back on track.

In addition, the malfunction could cause other problems, such as leaking or failing to provide the necessary pressure. Thus, it is important to have a reliable pump that is up to the task in order to make sure that the process is smooth and efficient.

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Many scientists claim that the synthesis of the first organic molecules from inorganic precursors was possible because of the highly reducing atmosphere found on primitive Earth.
Which of the following is an appropriate null hypothesis that could be used when investigating the claim?
answer choices
The synthesis of organic molecules from inorganic molecules is possible under current atmospheric oxygen levels as well as those found on primitive Earth.
Organic molecules were transported to primitive Earth by a meteorite or other celestial event.
The absence of a significant quantity of atmospheric oxygen is required for the synthesis of organic molecules from inorganic precursors.
The level of atmospheric oxygen on modern Earth is significantly higher than on primitive Earth.

Answers

The synthesis of organic molecules from inorganic molecules is possible under current atmospheric oxygen levels as well as those found on primitive Earth is an appropriate null hypothesis that could be used when investigating the claim.

The hypothesis that organic molecules can be synthesized from inorganic molecules under current atmospheric oxygen levels, as well as those found on primitive Earth, is an important one to consider when researching the claim that life could have originated on the planet.

This null hypothesis provides evidence that organic molecules can form without the presence of life, allowing us to explore the possibility of life's origin on Earth in a more comprehensive manner.

By studying the various chemical reactions and processes involved in the synthesis of organic molecules, we can gain a better understanding of the conditions that were necessary for the emergence of life.

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how do you know that these kittens come from the same litter?

Answers

These kittens come from the same litter because kittens from same litter can look different.

facts about Kittens -

Due to the possibility that kittens from the same litter may have different fathers, certain litters may contain half-brothers and half-sisters. This can occur when female cats have many matings with different males over a short period of time, resulting in multiple pregnancies and one litter.

Brothers are likely to have similar colors because male kittens always inherit their mom's fur color. The coats of female kittens, especially those with different dads, can differ from those of their sisters because they inherit a combination of their mother's and father's coloring.

Kittens will pick up a lot from their siblings throughout the first few months of life. You might notice kittens engaging in competitive play as they practice hunting and other activities with their littermates. Although it can occasionally appear a touch violent, as long as they are each pursuing and pouncing on the other in turn, it is a fantastic way for them to develop new abilities.

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2. Which material is found near yolcanoes?
A. Coal
B. Oil
C. Freshwater
D. Metal

Answers

Answer:

the answer is D. Metal..

Answer:

Metal

Explanation:

why do we need sex cells to have half the number of chromosomes

Answers

So to keep the number of chromosomes from not doubling each time, it's important for sex cells to have half the number of chromosomes as body cells. This way, when two sex cells combine, they create a body cell with the right number of chromosomes.
To keep number or chromosomes from doubling

what does density mean?

Answers

Answer:

the awneser is gxgjhgkytxtrjdctgxjrjgfcfcyf

Explanation:

i save peoples lives today

What are some of the strategies which can be used on an individual with chronic disease to enable change of behaviour overtime?

Answers

When it comes to helping individuals with chronic diseases to change their behaviors and habits, some of the most effective strategies include:

Education: Educating the individual about the condition, the risks of not changing their behaviors, and the potential benefits of changing them.Goal Setting: Helping the individual to set realistic, achievable goals for behavior change, and then providing support and encouragement throughout the process.Self-Monitoring: Encouraging the individual to track their progress in making changes to their behaviors, either through physical notebooks or via apps.Motivation: Offering incentives and rewards for positive behavior change, such as giving praise or offering rewards for small successes.Social Support: Helping the individual to build a support network of friends and family who can provide motivation, assistance, and accountability throughout the process.Cognitive Restructuring: Helping the individual to identify and challenge the negative thoughts and beliefs that may be contributing to the negative behaviors, and replacing them with more positive and helpful thoughts.Problem-Solving: Working with the individual to develop strategies for overcoming obstacles that may be standing in the way of making changes.

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__________ are lethal and non-lethal tools and systems available to the joint force that produce effects within the Area of Operation (AO)

Answers

Fires are lethal and non-lethal tools and systems available to the joint force that produce effects within the Area of Operation (AO).

The use of weapon systems to produce a specific lethal or nonlethal effect on a target is referred to as "firing" in Army doctrine. In order to produce precise lethal and non-lethal effects, army fires systems are entrusted with delivering fires in support of offensive and defensive operations. The flames warfighting function must complete three crucial tasks in order to do this. Deliver one fires 3 Conduct targeting and 2 Include all Army, Joint, and Multinational Fires. 3 In addition, fires help operational forces seize, hold onto, and use the initiative while boosting freedom of action and the ability of ground forces to move and maneuver.

Mobile defense, area defense, and retrograde are the three categories of defensive activities. Both the tactical and operational spheres of combat are affected by all. By allowing the opponent to approach into a position where he may be attacked from behind, mobile defenses aim to defeat invading forces.

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What is the correct term for variation in characteristics within populations of the same species?

Answers

Phenotypic variation is the differences among the genomes of different members of the same species. A genome is composed of all the hereditary information, all the genes of an organism.

What is Phenotypic variation?

Phenotypic variation is the variability in phenotypes which exists in a population. These are the result of genetic variation in an individual. For example, people come in all types of shapes and sizes including height, weight, and body shape are the common phenotypes that vary. Hair, eye color, and the ability to roll the tongue are observable variable phenotypes, too.

Phenotypic variation is the sum total of all the variations in characteristics within populations of the same species. In contrast, the genotypic variation is the sum total of all the variations such as allele frequency which are present in the genome of populations of the same species.

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How cloud computing reduces energy consumption?

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Cloud computing can reduce energy consumption by optimizing the physical environment (think cloud computing facilities in cold climates), cutting the power spent to cool the servers.

Cloud computing has several advantages. B. Businesses can efficiently store, protect, and analyze large amounts of data. Cloud computing can significantly reduce energy consumption, waste, and greenhouse gas (GHG) emissions. The

data center is best known for cloud computing and contains a collection of servers that store business information and run applications.

Idle servers and resources in data centers waste a lot of energy. Energy is wasted when the server is overloaded. There are few techniques for load balancing, VM virtualization, VM migration, resource allocation, job scheduling, etc. used to solve the problem.

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Needs help ASAP
Which of the following is an example of genetic engineering?

A. A string of three bases within an RNA molecule codes for a specific amino acid

B. A string of amino acids bonds together to form a protein that controls a trait

C. A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA

D. And the nucleus of a human cell DNA strands separate and are used as a template for new RNA molecules

Answers

A bacterial cell produces human insulin because human DNA has been added to the bacterial DNA is an example of genetic engineering.

What do you mean by genetic engineering?

Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology.

For example, genetic engineering may involve adding a gene from one species to an organism from a different species to produce a desired trait. Used in research and industry, genetic engineering has been applied to the production of cancer therapies.

Genetic engineering is accomplished in three basic steps. These are (1) The isolation of DNA fragments from a donor organism; (2) The insertion of an isolated donor DNA fragment into a vector genome and (3) The growth of a recombinant vector in an appropriate host.

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What are the 2 main causes of genetic variation in populations?

Answers

Gene flow as well as genetic drift seem to be the two primary drivers of genetic variability.

Genetic variations are adjustments or alterations that occur in the gene order of DNA. Those genetic variants were critical since these drive most living things' evolution. The two primary variables that determine genetic diversity in a population are DNA mutation and sexual reproduction.

A genetic mutation is a change in the DNA sequencing of a gene that leads in the synthesis of a distinct type of product. Through sexual reproduction, two people contribute individual germ cells to produce kids. Variations occur as a result of the offspring acquiring DNA from either parent.

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Which of the following is not a factor in the regulation of cell division in normal cells?
a. Growth factors enter the cell nucleus
b. Signals are transduced from cell surface to cell nucleus
c. Transcription factors are recruited
d. Growth-inhibiting factors promote the synthesis of proteins that inhibit cell division

Answers

Growth factors entering the cell nucleus are not a factor in the cell division regulation in normal cells. Therefore, option a is correct.

The word "growth factor" refers to a group of gene products that are crucial in controlling cell division and tissue proliferation. There is a unique cell receptor for each growth factor.

Growth factors can act on particular cell surface receptors, which then relay their signals to various intracellular components and ultimately lead to altered gene expression. When a growth factor binds to a receptor, cell division can begin or be blocked in particular circumstances.

They attach to the receptor and function as signaling molecules. To have the desired effect, the activated receptor in turn activates an intracellular protein. They don't enter the cell nucleus instead act on the cell surface receptors.

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What types of light are reflected by plant leaves?

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Plant leaves reflect visible light, and the specific colors of light that are reflected depend on the pigments present in the leaf. Chlorophyll, the pigment primarily responsible for the green color of leaves.

Reflects green light, while absorbing other colors of the visible spectrum such as blue and red. Carotenoids, which are pigments that give leaves their yellow and orange colors, reflect yellow and orange light. And finally, anthocyanins which are pigments that give leaves their red color, reflects red light. Additionally to these pigments, other substances on the leaf surface can also affect the light reflection. It's worth noting that while leaves reflect visible light, they also reflect other type of light such as near-infrared and ultraviolet, but these are not visible to the human eye, however they are important for the plant growth and health.

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Help please?!!!???!????!??!??????????????!??!?!

Answers

Answer:

here is your answer

Explanation:

C.

it may be

Answer:

it is negatively charged

How does an increase in cell size affect ratio of surface area?

Answers

As the cell radius increases, the surface area increases as the radius squared, but the volume increases as the radius cubed (much faster). Therefore, as the cell size increases, the surface area to volume ratio decreases.

Cell proliferation reduces the surface area to volume ratio. This is because as a cell grows, its volume (its internal contents) increases faster than its surface area (its cell membrane).

As cells grow larger, the surface area to volume ratio decreases dramatically, similar to an agar cube. Larger cells have to transport substances across membranes, but they deliver a larger volume and a proportionately smaller surface area.

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Explain how the agricultural job market today is different than it was 100 years ago

Answers

Agricultural job market today is different than it was 100 years ago because of better technology has allowed farmers to feed more people and requires fewer people to work on farms to feed their families.

The manner that farmers are able to farm and raise food has been greatly impacted by changes in equipment. In the past, farmers had to use hand labour or equipment drawn by horses to complete field work. Over the past 50 years, the agriculture industry has undergone a significant transformation.Farm equipment has become larger, faster, and more productive because to technological advancements, allowing for the more effective cultivation of larger areas. Additionally substantially enhanced, seed, irrigation, and fertilisers have helped farmers boost harvests. The crops on old farms weren't watered by sprinklers. Pesticides to fight off pests and insects weren't available. They lacked tractors.

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Is 0 the middle of a number line? 100 POINTS!!!Calculate the energy of a baby carriage sitting at the top of a hill that is 21 m high. The carriage with the baby has a mass of 12 kg. Before classifying insects into different orders, review the larger classifications for insects:Kingdom: AnimaliaPhylum: ArthropodaClass: InsectaConduct research online to determine the characteristics an organism must have to be classified in each of the taxonomy levels shown. Note the characteristics you find in the answer space. Why is it better to buy in bulk in business? Your teacher asks how many uses you can think of for a pencil. She is testing your?a. convergent thinking.b. intrinsic motivation.c. divergent thinking.d. prototypes.e. concept. here are the ages in years of 10 children 4 9 6 7 3 5 2 6 4 6 What is the mode median and range According to the passage, which of these happens when gretchen and aunt jasmine reach the summit? a. Gretchen worries about descending on the narrow path. b. They watch the sun ascend into the sky as if to greet them. c. Aunt Jasmine transfers the daypack to Gretchen's shoulders. d. They marvel at the natural wonders appearing all around them. What do these two changes have in common?sauce burning on a stovefiring a clay pot in a hot kilnBoth are caused by coolingBoth converse massBoth are chemical changesBoth are physical changes The 7th grade has 159 students. There are twice as many boys in the grade as there are girls.How many boys are in the 7th grade? WILL MARK BRAINLIEST ASAPPPP The table shows the number of one doctors patients who caught a cold one week and whether or not they exercised regularly. help me please! Fusion of hydrogen is the main source of the sun's energy.True False Which ordered triple is plotted?(3, 5, 4)(3, 5, 4)(3, 5, 4)(3, 5, 4) Read this sentence from Black Sunday: The Storm That Gave Us the Dust Bowl.Once the storm subsided, a simple spring day had become the worst day in recent memory.Which choice best explains the structure of this complex sentence? A. An independent clause is followed by a dependent clause. B. A dependent clause is followed by an independent clause. C. A dependent clause appears in the middle of an independent clause. D. A dependent clause appears at the beginning and end of an independent clause. How to solve this problem in Chemistry? I am stuck Someone help plz make sure its right will mark brainiest Describe the distribution of the ages of the Best Actor Oscar winners [LINK]:A) What is the BEST description of the SHAPE?- The distribution is not skewed- The distribution is skewed left.- The distribution is skewed right. A skateboarding ramp isin the shape of a triangularprism. If the entire ramp isto be painted, and a can ofspray paint covers 1,000square inches, how manycans will be needed?Help me please! I only need one more question WILL MARK BRAINLIEST!!Which situation indicates a beta emission?The atomic number increases by one, but the mass number does not change.The atomic number decreases by two, and the mass number decreases by four.The atomic number decreases by one, and the mass number decreases by one.The atomic number and the mass number both decrease by two. Identify three challenges a manager faces in motivating employees today as opposed to 50 years ago. Develop a response that includes examples and evidence to support your ideas, and which clearly communicates the required message to your audience.