Answer: They are responsible for animal migration because the chemicals they contain cause the animals to move to a different environment.
Explanation:
I found this information from https://jeb.biologists.org/content/222/Suppl_1/jeb191890
DNA replication<span> is </span>semi-conservative<span> because each helix that is created contains one strand from the helix from which it was copied. </span>
It is the trigeminal. check my spelling though.
Answer:
they developed some structures or parts to survive
the terrestrial environment
Well, pollution is probably the main reason, but i think all of them are reasons why animals are dying off, if there isn't any choice for all of them, then your best bet would be to do a, pollution.
