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Andrews [41]
3 years ago
11

Why do communites change over time?

Biology
2 answers:
balandron [24]3 years ago
8 0
Communities change over time because of natural or human disturbances and because organisms alter their environment and pave the way for other species.
alexdok [17]3 years ago
3 0
It is all in the pyramid
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A sequence of three nitrogenous bases in a messenger-rna molecule is known as a.
sergejj [24]

Answer:

A sequence of three nitrogenous bases in a messenger-rna molecule is known as <em><u>Codon</u></em>

Explanation:

Codon is a triplet of three nitrogenous bases present in mRNA. It can be any three from uracil, adenine, guanine or cytosine. They are arranged in specific order and code for specific amino acids.

5 0
2 years ago
Suppose that ear length in rabbits is controlled by two additive genes, each of which has two alleles. A true-breeding female (a
PilotLPTM [1.2K]

Answer:

The ear length will be 11 cm.

Explanation:

To know about the ear length of F1 generation, we need to know that how much length in centimeters is contributed by each of the alleles. As we know, each allele has the same value for contributing to the effect of ear length, hence we can divide the ear length by 4 to get our results.

As 6 divided by 4 is 1.5 hence, the allele a and b contribute to 1.5 cm of the length of the ear.

6 divided by 4 is 4, hence the alleles And B contribute to 4 cm of the length of the ear.

The F1 generation will have AaBb genotype hence, the lenght will be 4+1.5+4+1.5 = 11 cm.

6 0
3 years ago
All of the following are functions of a coelom EXCEPT serving as a hydrostatic skeleton. processing and storing food. allows dig
Likurg_2 [28]

Answer:

Processing and storing food.

Explanation:

The coelom is the hollow structure formed in the organisms filled with the coelom fluid. The coelom is formed during embryogenesis which may be lined by the mesodermal layer or not.

The formation of coelom serves many functions in different organisms like it allows the internal movement of the organs in the body, allows the independent movement of the digestive tract, the fluid present in the cavity acts as a hydrostatic skeleton in the lower organism and cushions the internal organs.

The function that is not performed by the coelom is that it is not involved in the processing and storing food in organisms.

Thus, Processing and storing food is correct.

3 0
3 years ago
What was the difference between Darwin and Lamarck?
GrogVix [38]
The answer is the idea of mutations was understood by both but Lamarck was able to prove it.
8 0
3 years ago
Read 2 more answers
The____________are very small blood vessels constituting the end of an artery or vein where the exchange of vital substances tak
solmaris [256]
Answer: the capillaries.

<span>The blood capillaries are blood vessels with very small caliber. They form the blood distribution and collection network in cells. They are the communication between branches originating from the arteries and with the smaller veins. It is on the walls of the capillaries that occurs <span>the exchange of water, oxygen, CO2,  other nutrients and chemical residues.</span></span>
8 0
3 years ago
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