Assessment Questions on Background Information on Extinction and Endangered Species

Explain how extinction is important in the history of life on Earth.

How is the current "mass extinction" different from previous mass extinction?

How can the introduction of a nonnative species into an environment cause extinction of another species?

Why is it difficult for scientists to know the exact cause of a species' extinction?

Critical thinking question:

What role do you think humans should have in preventing the continuing rate of species' extinction?

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