Biology High School

Question 3 point)
in the late 1980's scientists discovered a new fossil skeleton that changed their thinking about the events leading to life on land. This new fossil
had legs and feet, but ankles that were too weak to support it's weight on land. It had lungs and gills, but the rib cage was too short to prevent
the chest cavity from collapsing when the animal was on land. These structures suggested that limbs evolved before retrapods moved onto
land. What is the name of this new fossil skeleton?

Answers

Answer 1

Answer:Ichthyostega

Explanation: did the assignment and got it correct!

Related Questions

what are three biotic factor that limit the carrying of any habitat?

Answers

Answer:

Amount of food, competition with other species, habitat space

How does wood that is not burning differ from a nonflammable materials?

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Because unlike nonflammable materials, wood still has the ability to burn.

Wood is flammable, which means that it can burn when it is exposed to heat, oxygen, and an ignition source (such a spark or flame).

Thus, Nonflammable materials are those that do not readily ignite and do not burn even when exposed to high temperatures or flames.

Combustion Behaviour: During a fire, when wood is exposed to heat and oxygen, a combustion process takes place, releasing heat, light, and numerous combustion byproducts like carbon dioxide and water vapour.

The fire is maintained and can spread as a result of this procedure. Even when exposed to high heat or flames, nonflammable materials do not burn and do not support a fire.

Thus, Wood is flammable, which means that it can burn when it is exposed to heat, oxygen, and an ignition source (such a spark or flame).

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Explain in your own words the difference between a leading strand and a lagging strand.

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Answer:

So basically the primary distinction between the leading and lagging strands is that the leading strand is the DNA strand that develops continuously during DNA replication, whereas the lagging strand is the DNA strand that grows in small pieces known as Okazaki fragments. A leading strand is one that is produced in the 5'-3' direction, whereas a lagging strand is one that is formed in the 3'-5' direction. The leading strand is constantly produced where the other is not.

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Cellular respiration in plants does not require atmospheric oxygen because

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Answer:

Oxygen produced during light reaction of photosynthesis is partially consumed during cellular respiration by plants and unconsumed oxygen is released in atmosphere. Thus plants produce oxygen in presence of light.

Answer:

it uses the oxygen generated in photosynethesis

Explanation:

Starch is found in foods such as peas, corn, and potatoes. For the body to receive energy from starch, it is broken down into smaller units. A mutation occurs in the gene that codes for a protein that breaks down starch.In which case will the mutation be harmful?

Answers

This mutation would be harmful for the body because, when not able to break down the starch and use it for energy, the body will begin to have starch buildup and not be able to do anything with it. It would continue to build up and do some serious damage everytime someone who has this mutated gene eats food rich in starch.

Como se llama la producción de la fotosíntesis y por cual tejido viaja las plantas

Answers

Answer:

se llama glucosa i las plantas transporta agua por el xilema i el floema transporta savia

Explanation:

Nitrogen and phosphorus are referred to as macronutrients because ________. A. they are larger than other nutrients needed by plants B. they are needed by large organisms C. they are required in large amounts for organisms to survive D. they are needed to manufacture large biomolecules E. their cycles have larger reservoirs than those of micronutrients

Answers

C. They are required in large in large amounts for organisms to survive

Macronutrients are all substances that provide energy to the metabolism for optimal functioning, nitrogen and phosphorus are required in large amounts for organisms to survive.

What are macronutrients?

It refers to those elements that provide energy to the body, these are proteins, carbohydrates and lipids.

Nitrogen and phosphorus, meanwhile, allow the development of metabolic processes, prevent infections and contribute to growth.

Therefore, we can conclude that the body requires a greater amount of macronutrients than micronutrients, nitrogen and phosphorus are required in large amounts for organisms to survive.

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Which underwater ecosystem is made of calcium carbonate structures?

tide pools

coral reefs

kelp forests

salt marshes

100 points and if correct brainliest <33

Answers

Answer:

coral reefs

Explanation:

Coral is a sea living or aqueous animal.Coral shells are made of solid calcium carbonate.Chemical formula for calcium carbonate is CaCO3

Answer:

Coral reefs OR A coral reef

Explanation:

It's function is to provide protection / shelter for different species of fish/water wildlife.It is an ecosystem Which is under water.Corals are marine/ocean invertebrates (without a backbone)

Which statement describes the ability of the cell membrane to allow various substance to move through it?

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The cell membrane is selectively permeable.

ola (b) Give any two benefits of bacteria to man

Answers

Answer:

to help digest food and to make vitamins

Explanation:

in the correct order, what are the three major arteries that branch off the aortic arch?

Answers

the brachiocephalic artery (which divides into right common carotid artery and the right subclavian artery), the left common carotid artery, and the left subclavian artery.

defense cells in blood are called white blood cells or:

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white blood cells are also called leukocytes or leucocytes

the thick mucus secreted by the tissues lining the respiratory passages is known as

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It is known as the phlegm

what happens when air masses of different temperatures meet?

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Answer: When two air masses meet together, the boundary between the two is called a weather front. At a front, the two air masses have different densities, based on temperature, and do not easily mix. ... Winds are common at a front. The greater the temperature difference between the two air masses, the stronger the winds will be.

Explanation:

based upon structural classification, what type of joint is a suture?

Answers

Based upon structural classification, what type of joint is a suture? Sutures are classified structurally as fibrous joints. They would be classified functionally as synarthrotic joints based upon their degree of movement.

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after telophase i of meiosis, the chromosomal makeup of each daughter cell is

Answers

Answer:

haploid, and the chromosomes are each composed of two chromatids

Explanation:

going off what I remember

during osmosis, the net movement of water molecules will be from areas of __ free energy to areas of __ free energy, or __ energetically.

Answers

Osmosis refers to the net movement (diffusion) of water molecules across a semipermeable membrane. This movement occurs in favor of a concentration gradient.

During osmosis, the net movement of water molecules will be from areas of HIGH free energy to areas of LOW free energy, or DOWNHILL energetically.

Osmosis involves the movement of water molecules in favor of a concentration gradient, i.e., from an area of high concentration to an area of low concentration.

Osmosis is a type of passive mechanism because it does not require energy to move water across the membrane.

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one anatomical difference between cercopithecoids and hominoids is:

Answers

Answer:

Cercopithecoids have a narrow nose and palate, and smaller brains relative to body size than Hominoids

Why are antibiotics unhelpful for treating the common cold?
O A. Bacteria are not killed by antibiotics.
O B. Colds are caused by antibiotics.
O c. Antibiotics cannot treat illnesses.
O D. Colds are caused by viruses.

Answers

D. colds are caused by viruses

Answer:

d cold are caused by viruses

help plssssssssssss plsssssssssss

Answers

Answer:

The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations,

Explanation:

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an average adult cheetah has a metabolic mass of 44,010 grams and a resting metabolic rate of 61.77 joules per second. is this information to add a data point for the cheetah to figure 2. based on the data, would u characterize the cheetah as an ectotherm or endotherm? support ur answer with evidence from the graph.

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you should plot the point slightly above those of the chimpanzee and dog, where the blue star is in the graph to the right. They should conclude that a cheetah is an endotherm because its placement on the graph is in trend with the endotherms, not the ectotherms

Why do we have high and low tides?

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Answer:

It often accompanies a new moon and when the moon is closest to the Earth. The moon's gravitational pull on the Earth and the Earth's rotational force are the two main factors that cause high and low tides. Tides move around the Earth as bulges in the ocean.

Which of the following was developed following Griffith's 1928 experiment. A. Some pathogenic bacteria cannot be heat-killed. Bacterial virulence is related to temperature resistance. B. Streptococcus pneumoniae causes disease. C. DNA from dead encapsulated bacteria can transform living un-encapsulated bacteria into living encapsulated bacteria. D. Dead encapsulated bacteria can cause disease.

Answers

Answer:

I believe A is the answer, but I'm not positive.

Explanation:

Griffith demonstrated in 1928 that the ability to synthesis a capsule and consequently become virulent can be transferred from heat-inactivated “smooth” strains to surviving but avirulent “rough” strains of S. pneumoniae. Therefore, option (A) is correct.

What was Griffith's experiment?

British bacteriologist Frederick Griffith's 1928 bacteria experiment was the first to demonstrate the "transforming principle," which led to the realization that DNA serves as the carrier of genetic information.

Griffith tried injecting mice with heat-killed S bacteria as part of his investigations (that is, S bacteria that had been heated to high temperatures, causing the cells to die). Unsurprisingly, the mice were not harmed by the heat-killed S bacterium.

The first study demonstrating that bacteria are capable of transferring genetic information through a process known as transformation was conducted by Frederick Griffith.

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Explain how Earth's magnetic field is generated.

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Answer:

The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in the Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.

Answer:

On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet

Name a process in plants that uses oxygen. Compare the raw materials and products of this process with those of photosynthesis

Answers

Answer:

Cellular respiration uses oxygen. Comparisons below in explanation.

Explanation:

Plants do both photosynthesis and cellular respiration. They make their own food (photosynthesis) and break it down to make energy (cellular respiration). Cellular respiration uses oxygen, while photosynthesis doesn't (it is a product).

Photosynthesis has this as its general chemical equation:

[tex]6CO_2 +6H_2O[/tex] ⇒ [tex]C_6H_{12} O_6 + 6O_2[/tex]

Cellular respiration has this as its general chemical equation:

[tex]C_6H_{12} O_6 + 6O_2[/tex] ⇒ [tex]6CO_2 + 6H_2O[/tex]

As you can see, the raw materials of cellular respiration (glucose and oxygen) are the products of photosynthesis. The products of cellular respiration (carbon dioxide and water) are the raw materials used in photosynthesis.

List the 5 Factors that influence Climate

Answers

+ wind patterns
+ elevation/altitude
+ temperature
+ distance from sea
+ latitude

Answer:

Latitude, Altitude, Winds, Distance from the sea, relief

Explanation:

Transcription is the process by which the
information in a strand of DNA is copied
into a new molecule of messenger RNA.
Which of these are the steps involved in
transcription?

Answers

Answer:

1. initiation

2. elongation

3. termination

Most opportunist species ____.

are non-native

tend to mature slowly after birth

go through irregular and unstable boom-and-bust cycles in their population sizes

are especially vulnerable to extinction

tend to compete well when their population size is near the carrying capacity of their environment

Answers

Most opportunist species go through irregular and unstable boom-and-bust cycles in their population sizes. Please mark BRAINLIEST.

tissue cultures samples of cancer cells are taken from cancer patients

Answers

Answer: Not quite sure how to answer that

Explanation:

What is the volume of a 2 X 4 that is 8 feet long?

What would the density of the 2 X 4 be if it has a mass of 652 grams?

Answers

Answer:

Calculate the density of a 500 g rectangular block with the following dimensions: length=8 cm, width=6 cm, height=5 cm. M = 500g.

Explanation:

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What was the result of the Battle of Britain?O A) Hitler's army destroyed Britain's military forces.OB) Britain decisively won the war.O C) The United States decided to enter the war.O D) The British air force rebuilt its strength. Use these words and make it into a short story and Ill give brainliest What is the name of the structure formed when fertilization occurs? which statement best describes an efect of the filibuste?A It makes it easier for the Senate to pass bils without legityBlit prevents the president from vetongbils the Senate strongCtencourages the House of Representaties gass bilsieSenate will not considerItalicus senators to present a vote onbills that would otherwise How is heat transferred from one object to another? A. Heat moves from warmer objects to cooler objects. B. Heat moves from cooler objects to warmer objects. c. Heat moves between objects of the same temperature. D. Heat moves back and forth between two objects. Triangle ABC is graphed on a coordinate plane with vertices at A (-3,7), B (9,-8), andC(-5, -6). If triangle ABC is dilated by a scale factor of m with the origin as the centerof dilation to create triangle A'B'C', what will be the coordinates of the dilated vertexB? Which excerpt from Frankenstein most clearly portrays nature as cruel?O A. When I awoke | found that the sun had already mountedconsiderably. The wind was high, and the waves continuallythreatened the safety of my little skiff. I found that the wind wasnortheast and must have driven me far from the coast from whichI had embarked.B.The storm appeared to approach rapidly.. .. It advanced; theheavens were clouded, and I soon felt the rain coming slowly inlarge drops, but its violence quickly increased....The darkness and storm increased every minute, and thethunder burst with a terrific crash over my head. ... Vivid flashesof lightning dazzled my eyes, illuminating the lake, making itappear like a vast sheet of fire.C. 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You have lost the directions about the order in which to add the ingredients, so you decide to add them in a random order. What is the probability that the ingredients are added in the exact order listed above? Gary goes to the grocery store to buy hot dogs and hamburgers for a cookout. He buys a total of 8 packages for a total of $28.52. A package of hot dogs costs $2.29 and a package of hamburgers costs $5.69. Compare and contrast the accomplishments of the first three kings of the Israelites. (This is for my Algebra ll project all you need to do is answer this question) How many siblings do you have? Bramble Corp. makes and sells umbrellas. The company is in the process of preparing its Selling and Administrative Expense Budget for the last half of the year. 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