Succession and Extinction

Question 1

Where do scientists find pollen grains to study ancient climate change?

Revolt · Accepted Answer

in sediment layers

Question 2

What attribute of the pollen grains helps scientists identify the types of plants they belonged to?

Revolt · Accepted Answer

shape

Question 3

What natural element is one of the best preservers of prehistoric life?

Revolt · Accepted Answer

ice

Question 4

The shape of Earth’s orbit around the Sun is .

Revolt · Accepted Answer

elliptical

Question 5

What statements accurately describe sunspots? Check all that apply.Sunspots are storms on the Sun’s surface.Sunspots are marked by intense magnetic activity.Sunspots produce solar flares and hot gassy ejections.Sunspots can affect Earth’s climate.Sunspots are cool areas where the Sun is covered by clouds.

Revolt · Accepted Answer

Sunspots are storms on the Sun’s surface.; Sunspots are marked by intense magnetic activity.; Sunspots produce solar flares and hot gassy ejections.; Sunspots can affect Earth’s climate.

Question 6

Which of these are causes of long-term climate change? Check all that apply.Earth’s orbit around the Sunfossilsmovement of continentssolar energyvolcanic activity

Revolt · Accepted Answer

Earth’s orbit around the Sun; movement of continents; solar energy; volcanic activity

Question 7

What clues in fossils help scientists identify different ice ages?

Revolt · Accepted Answer

plant and animal remains

Question 8

The tilt of Earth is responsible for .

Revolt · Accepted Answer

seasons

Succession and Extinction Answers

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