Unit Test — Cumulative exam

Question 1

The sustainable use of rainforest resources is exemplified by _______.a.lumber harvestingb.ranchingc.harvesting nutsd.none of the above

Revolt · Accepted Answer

C

Question 2

The scientific community disagrees about _______.a.the rate of global climate changeb.the occurrence of global warmingc.the need for actiond.all of the above

Revolt · Accepted Answer

A

Question 3

Which of the following best explains why air pollution that was once blamed for global cooling is now considered responsible for global warming?a.Pollution began reflecting sunlight and heat rather than absorbing it.b.Evidence of global warming became overwhelming.c.Scientists mistakenly thought pollution reflected sunlight and heat rather than absorbed it.d.Congress required scientists to assign a cause to global climate change.

Revolt · Accepted Answer

C

Question 4

Human use of groundwater has _______ over time.a.increasedb.decreasedc.decreased and then increasedd.remained the same

Revolt · Accepted Answer

A

Question 5

Which of the following is an example of a long-term change to ecosystems?a.seasonsb.tide cyclec.evolutiond.population growth

Revolt · Accepted Answer

C

Unit Test — Cumulative exam Answers

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