A characteristic that helps an animal survive is called an adaptation.
Let's take a frog, for example.
It has strong leg muscles to be able to jump out of the water, snatch prey, and return quickly. It has cameoflague to hide itself from predators and sometimes even poison. It has a see-through eyelid of sorts that acts like goggles to let it see underwater and still keep debris out of its eye...et cetera.
I think it is called a Case study.
Hopefully it is correct! :)
Answer:
Mutations in that organism, which can possibly lead to cancer (via mutations in the proto-oncogenes or tumor-suppressor genes)
The two types of crust are oceanic and continental, the lithosphere is composed of earth's crust and upper most mantle
