Answer:
I really do not know. I am usually pretty good with this but I don't understand if there is supposed to be a question with it.
Answer:
Umm that's the first step in the scientific method. So the answer would be nothing.
Explanation:
Answer:
b. The principle of uniformitarianism
Explanation:
The present is the key to the past" is a condensed formulation of the principle of uniformitarianism.
Answer:
I'm pretty sure it's D. Heart and blood vessels activity