Geologic Time Diagram - Heidi Cooley | Biblioteka

Use the image below to answer the questions the best you can!

1

How old is the earth?

4.6 million years

4.6 billion years

10,000 years

14 billion years

1

Cenozoic

Paleozoic

Mesozoic

1

Dinosaurs first appeared

Humans first appeared

Gigantic extinction

Impossible to tell

1

145.5

1.8

488.3

33.9

1

Archean

Paleozoic

Holocene

Triassic