Topic 6 - Lesson 2

Front

What era is known for the explosion of life that occurred during the Cambrian period?

Back

Paleozoic

Front

What event marks the beginning of the Cenozoic era?

Back

Extinction of dinosaurs

Front

What is the extinction event that ended the Mesozoic era called?

Back

Cretaceous-Paleogene extinction

Front

Which era is characterized by the development of early life forms?

Back

Precambrian

Front

Which era is known for the dominance of reptiles?

Back

Mesozoic

Front

What is the time period before the Cambrian called?

Back

Precambrian

Front

What significant event occurred at the end of the Permian period?

Back

Permian-Triassic extinction

Front

What era follows the Paleozoic era?

Back

Mesozoic

Front

What major group of animals first appeared in the Cenozoic era?

Back

Mammals

Front

Which era is known for the first appearance of birds?

Back

Mesozoic