The Precambrian

The current ocean crust is much like the Earth’s first crust

• True

• False

Tags

NGSS.HS-ESS1-5

Precambrian greenstone indicates the presence of

• volcanoes

• subduction zones

• cratons

• rift valleys

Banded-iron formations are important because they

• represent the time that large amounts of oxygen entered the atmosphere.

• were deposited mostly during the Cambrian Explosion of life.

• represent the first crust that solidified on Earth.

• are the result of the evolution of cellular respiration.

Tags

NGSS.HS-ESS2-7

A eukaryote is different from a prokaryote because it has a _____________.

Prokaryotic cells can replicate themselves better and so they are more common than eukaryotic cells.

• True

• False

During the Precambrian

• all continents were small microcontinents.

• there was a supercontinent called Rodinia the whole time.

• large lava flows indicate that the supercontinent Rodinia broke up.

• there was a solid crust that had solidified like the Moon’s crust.

Tags

NGSS.HS-ESS1-5

NGSS.HS-ESS1-6

NGSS.HS-ESS2-1

Blue-green algae are modern ____________.

Tags

NGSS.MS-LS4-2

The building blocks of life are

• amino acids

• proteins

• covalent bonds

• none of the above

Tags

NGSS.HS-LS1-1

NGSS.HS-LS1-6

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

• True

• False

Tags

NGSS.HS-ESS3-5

____________ is the chemical work of cells

Tags

NGSS.HS-LS1-7

NGSS.HS-LS2-3

NGSS.HS-LS2-5