Early Earth History

Complex organisms with gills and lungs were major life forms that existed in the_____________.

• Mesozoic Era

• Cenozoic Era

• Precambrian Era

• Paleozoic Era

Tags

NGSS.MS-LS4-1

90 % of marine organisms and 70% of land organisms died off due to environmental and/or climate changes during the Paleozoic Era.

• True

• False

Tags

NGSS.MS-LS4-1

Cyanobacteria, unusual worm like life-forms and marine organisms did not exist in Precambrian Time.

• True

• False

Tags

NGSS.MS-LS4-1

Species developed harder shelled eggs to raise them on land, this is to adapt to the changes in the environment during the Cenozoic era.

• True

• False

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Early land animals had gills as well as lungs.

• True

• False

Tags

NGSS.MS-LS4-2

Early land animals had to return to the water to reproduce.

• True

• False

The formation of the moon may have caused the Paleozoic extinction.

• True

• False

Tags

NGSS.HS-ESS1-6

Cyanobacteria increased the levels of carbon dioxide in the atmosphere.

• True

• False

Tags

NGSS.HS-ESS2-6

NGSS.HS-LS2-5

The Precambrian time period is the largest on the geological time scale.

• True

• False

Tags

NGSS.MS-ESS1-4

The geological time scale is divided up and organized according to what life forms existed on earth.

• True

• False

Tags

NGSS.MS-ESS1-4