<span>A retrovirus is anything of a group of RNA viruses that insert a DNA copy of their genome into the host cell to replicate.
your welcome
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50/50 it really depends on whos jeans ae stronger !
<span>When there is no oxygen, or the organism cannot use oxygen for respiration.
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Answer:
most likely disruptive selection
Explanation:
pretty sure they will reproduce to make slightly bigger offspring that can hide in rocks and stay warm
