What's powered by energy from earths interior

Give examples of animals that live in sea and are considered mammals. ♡

Classify the structures as homologous or analogous, depending on their structure and function.

Why is the theory of evolution important? it disproves all other theories about how life began. it provides a topic for debate. it is a unifying concept in biology. it explains how life began. i know for sure, it is not "it is a unifying concept in biology."