Question

Can someone help me with these questions

Answer 1

7) The Cretaceous period and it lasted for 80 million years

8) The Cenozoic era for 65 million years

9) 4.5 billion years ago

10) It began 252.2 million years ago

11) It ended 66 million years ago

12) About 190 million years

Step-by-step explanation:

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