Answer:
Grey Mice have a higher fitness because their phenotype allows them to blend in with their environment, thus helping them to avoid predators. This allows them to survive and reproduce better than the other mice.
It weakens the immune system making it unable to defend itself against viruses and it also attacks the immune system..
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Answer:
The chromosomes inroduces carbon factors
Explanation:
Uh the answer is eating food.
B THEY RELEASED CARBON DIOXIDE, WHICH EVOLVING ANIMALS NEEDED.
