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stellarik [79]
2 years ago
8

Viruses change at a very fast rate Can you use this information to explain why vaccines against a specific virus don't last fore

ver ?
Biology
1 answer:
Lorico [155]2 years ago
7 0

Viruses can multiply very quickly, and so they can go through natural selection at a much quicker rate, allowing certain vaccine resistant mutations to take over a population.

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identify the process that is necessary for sexual reproduction, explain why it is necessary, and identify how this process incre
e-lub [12.9K]
When a man and a women come together it is called sexual reproduction.
(had to keep it pg for the kids)
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8 0
3 years ago
What was the actual proportion of the basis for equal amounts of DNA
Stells [14]

Answer:

Equal amounts of DNA contain equal proportions of nitrogenous bases.

Explanation:

According to Chargaff's rule, the nitrogenous base pairs (Purines and pyrimidines) have an equal ratio (1:1) in the DNA of all the organisms. More precisely, the amount of adenine is equal to thymine and the amount of guanine is equal to cytosine in the DNA of all the organism. A-T base pair has two H-bonds while G-C base pair has three H-bonds.

7 0
3 years ago
Which ecosystem service would suffer from the opening of a mineral mine along a small mountain range?
andreyandreev [35.5K]

Answer:

D. Supporting

Explanation:

Ecosystem services include provisioning, regulating, culture and supporting services.

Opening of a mineral mine along a small mountain range will affect the supporting services of ecosystem because supporting services deals with soil formation, provision of habitat and nutrition cycle.

Opening of mineral mine will destroy the tosoil, landscape, forests and wildlife of mountain area which affect the supporting services such as habitat and soil formation.

Hence, the correct answer is "D. supporting".

5 0
2 years ago
What's the answer pleaseee??!!!
Troyanec [42]

Answer:

the first one

Explanation:

So the predicted offspring genotypes are 50% Hh and 50% hh

so there is a 50% chance that they will have no horns and and aa 50% chance that they wont

3 0
2 years ago
Please help me im stuck
butalik [34]
I think it’s C but I could be wrong
4 0
3 years ago
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