Explanation:
2 is B, 6 B ,7 A that's I know I hope this may help you
I think temprature and the right ph level
It can be caused by mutation, random mating, random fertilization, and recombination.
Hope this helps :)
We need the context of the work of you want us to answer
Claim: Whales evolved from land mammals to water mammals.
Evidence: The first whales evolved over 50 million years. One of the first whales, such as Pakicetus, were land animals with long skulls and carnivorous teeth, much like many adaptable land mammals back then and today.