Paleozoic Era

The longest unit of Geologic time

• Period

• Era

• Eon

• Epoch

Tags

NGSS.MS-ESS1-4

The shortest unit of Geologic time

• Period

• Eon

• Era

• Epoch

Tags

NGSS.MS-ESS1-4

Eons are broken down (subdivided) into smaller units called

• Periods

• Eras

• Epochs

Tags

NGSS.MS-ESS1-4

Periods are broken down (subdivided) into smaller units called

• Eras

• Epochs

• Eons

Eras are broken down (subdivided) into smaller units called

• Eons

• Periods

• Epochs

Tags

NGSS.MS-ESS1-4

Invertebrates _______ a backbone

• have

• do not have

The sudden appearance of new life on Earth

• Life explosion

• Cambrian explosion

• Explosion of life

• Geologic life explosion

Tags

NGSS.MS-LS4-1

Many organisms going extinct in a relatively short period of time

• Mass extinction

• Really big extinction

• Extinction

• Greenhouse effect

Tags

NGSS.HS-LS4-5

What was life like on Earth during the Early Paleozoic?

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

What was life like on Earth during the Middle Paleozoic?

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2