Question

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

Question 8 options:

the beginning of the Cenozoic

the end of the Precambrian

the end of the Mesozoic

the beginning of the Cretaceous

Answer 1

the beginning of the Cenozoic

Step-by-step 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.