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egoroff_w [7]
3 years ago
12

PLLLLLLLLLLLZ HELP Which of the following is marked by the appearance of organisms with hard parts?

Geography
1 answer:
Pani-rosa [81]3 years ago
7 0

Answer:

the beginning of the Cenozoic

Explanation:

  • The Cenozoic period began with the 65 million years ago and continuous till today and is composed of the modern-day inhabitants and is also known as the age of mammals and these were as the hornless rhinos and flight less dinosaurs.
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