Answer:
Energy is transferred between trophic levels when one organism eats another and gets the energy-rich molecules from its prey's body. However, these transfers are inefficient, and this inefficiency limits the length of food chains.
Give an example of a negative effect of selective breeding.
Answer:
Explanation:
Disadvantages include a reduction in genetic diversity and discomfort for animals that have very exaggerated characteristics.
Answer:
Many domestic animals and plants are the result of centuries of selective breeding. Disadvantages include a reduction in genetic diversity and discomfort for animals that have very exaggerated characteristics.
Explanation:
of the following are abiotic factors in an ecosystem except _______.
Select one:
a.
types of minerals
b.
ocean currents
c.
types of bacteria
d.
temperature
Which of the following best describes where life is found around the world and why we find certain animals on certain continents and islands?
Question 4 options:
Fossils
Carbon Flow Dynamics
DNA sequences
Biogeography
Answer:
biogeography is the answer
Some flowers show incomplete dominance. If RR = white and R'R' = red, which phenotypic ratio would
be expected in the o spring of two pink flowers?
Answer:
1 red: 2 pink: 1 white
0 red: 4 pink: 0 white would be the phenotypic ratio expected in the o spring of two pink flowers. So, the correct option is (D).
What is Phenotypic ratio?Phenotypic ratio defined as the relative number of offspring expressing a particular trait or combination of traits, which can be determined by performing a test cross and the frequency of the trait or trait combinations being expressed depending on the genotype of the offspring can be identified.
Phenotypic ratio is expressed as the ratio of different phenotypes present in the progeny of a cross where the ratios are numerical comparisons. For example, if one has three mangoes and two oranges, the ratio of mangoes to oranges will be 3:2.
For above given information, if we cross RR which is white with R'R' which is red, we will get 4RR' offspring which are pink in color. then the ratio will be 0 red: 4 pink: 0 white.
Thus, 0 red: 4 pink: 0 white would be the phenotypic ratio expected in the o spring of two pink flowers. So, the correct option is (D).
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What makes it hard for an astronaut to breathe in space ?
they need a oxegen tank cause you can’t breathe in space there’s no air cause there’s no trees so it’s like scuba diving you can’t breathe with out a oxygen supply and it might be uncomfor table and even few 30 mins you have to get a new oxygen tank (sorry if I’m wrong :clownface: )
Water reacts with minerals in some rocks and very slowly dissolves the rock. What type of weathering does this demonstrate?
Answer:
Salt wedging
Explanation:
Salt wedging is a natural phenomenon which occurs in rocks and stones. It is a physical weathering process. It is a process by which water enters into the small cracks on the rocks and form salt like NaCl and thereby enlarging the cracks.
Most water contains dissolved salts and when water enters into the small cracks of the rocks, the salt begins to grow and it exerts pressures on the walls of the crack thereby enlarging the cracks.
This type of phenomenon is mostly seen near the seacoast and in the arid regions.
Thus water reacts with the minerals in the rock and slowly dissolves the rock in salt wedging weathering process.
Water that reaches the ground and moves horizontally towards rivers, streams, and lakes is called runoff.
A. True
B. False
Answer:
A. True
Explanation:
flow off a hill slope directly to a stream in the form of runoff, or it may flows downward through the unsaturated zone to reach the water table. The area at the stream or lake to which the groundwater is flowing. Recall that water is flowing in pores where there is friction, which means it takes work to move the water.
an adaptation is
A - how an organism evolves during its own lifetime
B - any trait an organism possesses
C - a gene an organism has
D - a trait that helps an organism survive in its environment
What does the word "reliable" mean?
Answer:
the answer it can be depended on.
A scientist is studying a substance that is cycled through ecosystems. Which of the following substances might the scientist be studying?
soil
copper
glucose
nitrogen
Will report scammers so pls just help me out
which statement is correct about the relationship between plants and animals
A.) plants depend only on food
B.) animals depend only on plants for food
C.) plants do not depend on animals to survive
D.) plants and animals depend on matter produced by the other to survive
Answer:
hm id say D tell me if im wrong
Answer:
D
heres why because how do we breath plants and some plants are food.
Summarize the 3 trends in human population
Answer:
Population trend refers to changes over time and can include changes in ranging behavior (e.g., distance and route) and distribution, biogeography (e.g., size of population) and life-history (e.g., birth and death rates).
What is the purpose of rRNA?
A. to retrieve amino acids
B. to be a working copy of DNA
C. to assemble proteins
D. to replicate the genetic code in mitosis
Answer:
A
Explanation:
The primary function of rRNA is in protein synthesis – in binding to messenger RNA and transfer RNA to ensure that the codon sequence of the mRNA is translated accurately into amino acid sequence in proteins.
which involves producers, consumers, and decomposers?
the water cycle
nitrogen fixation
evaporation
the carbon and oxygen cycles
What two types of consumers are missing from this pyramid?
Please help I need to turn it in today !!!!
Answer:
decomposers and omnivores
Explanation:
Nicole made the model shown below to represent the steps in the formation of a thunderstorm.
The diagram has six boxes. The first box on the top left has the symbol '?' in it, an arrow points from it, over to the left to a box with the text 'Meets coool air'; this box has an arrow pointing down from it to a box with the text 'Condenses'; this box has an arrow pointing to the left to a box with the text 'Clouds formed'; this box has an arrow pointing to the left to a box with the text 'Clouds grow bigger'; and this box has an arrow pointing down from it to a box with the text 'Precipitation'.
© 2010 FLVS
Which of these best fits the empty cell in Nicole's model?
warm, moist air rises
warm, dry air descends
water vapor condenses in clouds
water vapor evaporates from ocean
Answer:
The correct answer is - warms, moist air rises.
Explanation:
When moist warm air rises and meets with the surface of cool air the more dense air that is cold air end up below the warm moist air in the troposphere it condenses as it rises.
The condensation of the warm, moist water leads to the formation of cloud formation. This cloud gets bigger and bigger until it precipitates and rain fall occurs.
Answer:b
Explanation:took the test
A team of science researchers is trying to decide which type of microscope to purchase for their laboratory. Compared to electron microscopes, a light microscope provides which of these drawbacks or disadvantages?
A. uses electricity
B. specimens cannot be alive
C. lower magnification power
D. more expensive to purchase and operate
Answer:
d
Explanation:
The drawback or disadvantage associated with the use of light microscopes over electron microscope is its lower magnification power.
LIGHT MICROSCOPE:
Light microscope is a type of microscope in which photons of light is used to view specimens. The light microscope is distinct from the electron microscope being that electron microscope uses beam of electrons instead. One advantage of light microscope is that it can view specimens alive while electron microscope can only view dead specimens. However, one disadvantage associated with the use of light microscope is that it possesses a lower magnification compared to electron microscopes.Learn more at: https://brainly.com/question/4442916
Please Help I will Mark Branliest for first answer Please
Answer:
to break down waste and worn-out cell parts
Explanation:
A 35-year-old woman comes to her dentist complaining of tenderness and pain in her cheek near the parotid gland, as well as bad breath and a foul-tasting mouth at meal times. A radiopaque fluid is injected into the parotid duct system through cannulation, and this sialography of the parotid duct confirms blockage by a calculus (sialolith). What muscle, through which the parotid duct passes, is most likely causing the stenosis where the sialolith now resides, blocking the drainage of the parotid duct
Answer:
A Buccinator. I hope this helps.
Explanation:
In rabbits, spotted coat (S) is dominant to solid color (s) and black (B) is dominant to brown (b). A true-breeding black spotted rabbit is mated to a true-breeding brown solid rabbit to produce a heterozygous F1 generation. Two F1 individuals are mated, and you do not see a 9:3:3:1 (black spotted: black solid: brown spotted: brown solid) ratio of offspring, but instead see that almost all offspring are a non-recombinant phenotype. This tells you that
Answer:
Epistasis effect result into these offspring
Explanation:
Given
spotted coat (S) is dominant to solid color (s) and black (B) is dominant to brown (b)
Genotype of true-breeding black spotted rabbit BBSS
Genotype of true-breeding brown solid rabbit bbss
Genotype of offspring BbSs
In normal crossing between BbSs and BbSs offspring of F1, should produce offspring in the ratio 9:3:3:1
But it does not happens in this case the simple reason could be presence of Epistasis in which the alleles assort independently but do not express themselves because of the following reasons -
a) Interaction between two or more loci thereby resulting into new phenotypes
b) An allele at one locus masks effects of other allele at one or more loci
c) Allele at one locus modifies the effects of alleles at one or more other loci
Which is the most likely result if the Ubx gene was activated either before or after it normally is activated in the sequence of Hox gene expression?
A. The insect develops slightly shorter or longer abdominal legs.
B. The insect develops normal body parts at either a slower or more rapid rate.
C. The insect develops normal body parts but in an altered time sequence.
D. The insect develops legs in other parts of its body.
Answer:
D. The insect develops legs in other parts of its body.
Explanation:
HOX genes, also known as homeotic genes, are evolutionarily conserved genes (containing homeobox sequences) that encode master regulators of embryonic development in animals. Hox genes modulate the body plan of an embryo along the head-tail axis. In general, these genes are arranged in the same order as they are transcriptionally expressed along the anteroposterior body axis. Moreover, Ultrabithorax (Ubx) is a Hox gene that is responsible for the proper development of the third thoracic segment in insects. In Drosophila, it has been shown that different segments of the leg regulate their size in response to Ubx expression.
What type of microscope would you use to view a live sample?
1. Scanning Electron Microscope
2.Transmission Electron Microscope
3.Magnifying glass
4. Light Microscope
Answer:
Compound microscopes
Compound microscopes are light illuminated. The image seen with this type of microscope is two dimensional. This microscope is the most commonly used. You can view individual cells, even living ones.
There are millions of organisms on Earth that scientists have classified into different levels of organization. Which of these characteristics would be most important to scientists when classifying organisms?
a)where the organism lives
b)how small the organism is
c)the genes of the organism
d)the shape of the organism
Answer:
I think no. b is the ans or maybe not
There are millions of organisms on Earth that scientists have classified into different levels of organization. The characteristics which would be most important to scientists when classifying the organisms will be the genes of the organism. Thus, the correct option is B.
What are the different levels of organization?Taxonomy is the study of classification of organisms. Scientists have used many different types of information to place the different organisms into specific groups. The groups are arranged in different levels. These levels were named as kingdom, phylum, class, order, family, genus, and species.
The organisms which were present on the Earth were classified on the basis of the environment where they live, how small is the size of the organism, and the shape of the organism found such as rod-shape, cocci, spirillum, etc.
Therefore, the correct option is B.
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how do mutations lead to a variation of traits with a population if organisms?
The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism's DNA that create diversity within a population by introducing new alleles.
What is Florida’s most popular gamefish
Answer:
Sailfish
Explanation:
One of Florida's most popular gamefish is the Sailfish.
Which process produces a greater number of offspring?
chromosome duplication
asexual reproduction
gamete formation
sexual reproduction
Answer:
asexual reproduction
Explanation:
Sexual reproduction produces a greater number of offspring compared to asexual reproduction, chromosome duplication and gamete formation.
What is the involvement in sexual reproduction ?This is because sexual reproduction involves the combination of genetic material from two parents, resulting in offspring that have a unique genetic makeup.
This increases the number of possible genetic combinations and thus the number of offspring produced. Chromosome duplication and gamete formation are involved in the process of sexual reproduction, but neither produces offspring by itself.
Chromosome duplication is the process by which one cell splits into two identical cells, each with the same genetic material. Gamete formation is the process by which reproductive cells such as sperm and eggs are formed.
These cells then combine during sexual reproduction to form a new organism. Asexual reproduction, on the other hand, involves a single organism producing offspring that are genetically identical to itself. This means that the number of offspring produced is limited compared to sexual reproduction.
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Explain how a school bus uses all of these energy types.
-Mechanical
-Chemical
-Electrical
-Thermal
Answer:
thermal
Explanation:
the use of fuel, the fuel move and convert to fire by the help of the plug which put a spark to mix with the fuel to enable movement
Answer:
electrónico como comutadora
Herbivores are also called _________________________.
Answer:
fruitarian, phytophage , vegan, vegetarian , lactovegetarian , or lactarian
Explanation:
I don't know what you're looking for, but I'm pretty sure that all these are basically the same thing as herbivores, correct me if I'm wrong
Which of the following is NOT evidence of evolution?
Question 2 options:
Fossils
Carbon Flow Dynamics
DNA Sequences
Biogeography
Answer: Carbon flow dynamics
Explanation:
The type of energy in starch molecules
Answer:
A chain of six is shown below.) Both plant and animal cells store the energy of glucose in these starch molecules for later use. Starch molecules may be found in chloroplasts. If a plant cell has a lot of extra starch molecules, then the starch gets stored in a separate structure known as a leucoplast.
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