Precambrian Life

The first Eon of Earth's history is called the ...

• Phanerozoic

• Proterozoic

• Archean

• Hadean

Tags

NGSS.HS-ESS1-6

Which hypothesis below best describes how the Earth and the Solar System formed around 4.6 billion years ago.

• Giant Impactor Hypothesis

• Late Heavy Bombardment Hypothesis

• Nebula Hypothesis

• Catatrophic Hypothesis

Tags

NGSS.HS-ESS1-6

On early Earth most of Earth's water originated from....

• inside the Earth

• Comets and Meteors

• the Sun

• Earth's Atmosphere

Tags

NGSS.HS-ESS1-6

Which theory below is most accepted regarding the formation of Earth's Moon?

• Nebula Hypothesis

• Giant Impactor Hypothesis

• Break-off Hypothesis

• Colapse Hypothesis

Tags

NGSS.HS-ESS1-6

What are the longest units on the Geologic Time Scale?

• epochs

• periods

• eras

Tags

NGSS.MS-ESS1-4

Blue-green algae are modern ____________.

One hypothesis is that Earth was covered with ice about 700 million years ago.

• True

• False

Tags

NGSS.HS-ESS3-5

Photosynthesis uses carbon dioxide and nutrients in the presence of sunlight to create

• food energy and ozone.

• chloroplasts and ozone.

• food energy and oxygen.

• life.

Tags

NGSS.HS-LS1-5

The oxygen that entered Earth's atmosphere was produced by

• clouds

• plants

• cyanobacteria

Tags

NGSS.HS-LS1-5

Stromatolites are piles of cyanobacteria that have been secreting a lime substance and hardening over time so that they resemble rocks?

• true

• false

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5