Science Homework Help

I’m working on a Environmental Science question and need guidance to help me study.

Looking for some help with answering this questions. Just needs to be APA format and about 250-300 words is fine. 

Is extinction natural? How has the extinction rate changed over time? Why are extinction rates today different from past extinction rates?

Essential Environment: The Science Behind the Stories
Jay Withgott & Matthew Laposata, 2018
Pearson
ISBN.13: 978-0-134-71488-2