Question

Which statement explains something that the fossil record indicates?

Earth is 4.5 billion years old.
Mammals have always existed on Earth.
Mass extinctions have occurred several times on Earth.
The amount of water on Earth has decreased over time.

Answer 1

C. Mass extincions have occured several times on Earth.

Step-by-step explanation:

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Answer 2

Mass extincions have occured several times on Earth.

Step-by-step explanation: