Succession and Extinction

Question 1

Which sources do scientists use to study ancient climates? Check all that apply.Earth’s orbittree ringsvolcanoespollen grainsfossils

Revolt · Accepted Answer

tree rings; pollen grains; fossils

Question 2

Why are pollen grains useful when studying the climate history of a region?

Revolt · Accepted Answer

They provide clues about the types of plants that grew in a region at a particular time.

Question 3

How does volcanic activity affect climate? Gas and ash filter out solar radiation, causing the temperature to . Water vapor and carbon dioxide are released into the atmosphere, causing the climate to get .

Revolt · Accepted Answer

Selection 1: decrease; Selection 2: warmer

Question 4

If Earth was not tilted on its axis, what changes would you expect to see in the seasons?

Revolt · Accepted Answer

Temperatures in summer and winter would be very similar.

Question 5

How can sunspots affect Earth’s climate?

Revolt · Accepted Answer

An increase in sunspots could cause an increase in Earth’s temperature.

Question 6

Which factors were affected by the breakup of the supercontinent Pangaea? Check all that apply.

Revolt · Accepted Answer

global wind patterns; ocean currents; global climates

Succession and Extinction Answers

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