Exam 44: Human Effects on the Biosphere

Four of these five choices are reasons to be concerned about increasing levels of UV radiation reaching Earth. Select the exception.

Four of these five choices are products that contain chlorofluorocarbons (CFCs). Select the exception.

Match the term with the appropriate description. Terms may be used once or more than once. -benefits life when it is in the upper layer of the atmosphere by absorbing UV radiation from incoming sunlight

In Louisiana, where marshlands have become open water, sediments are being brought in via barges and marsh grasses are being planted as an example of ____.

Match the term with the appropriate description. Terms may be used once or more than once. -main ozone destroyers prior to the Montreal Protocol

Plastics that wash into the ocean cause problems mainly because they ____.

-According to this map, portions of the western coast of the United States and Canada, as well as parts of the eastern coast of Brazil, are considered which type of ecoregion??

One kind of acid rain forms when which chemical compound from coal-fired power plants combines with water vapor in the air?

Which field of study most specifically addresses the decline in biodiversity?

California's native golden trout declined after European brown trout and eastern brook trout were introduced into California's mountain streams for sport fishing. This is an example of what type of threat?

Natural or man-made substances released into soil, air, or water in greater than natural amounts are called ____.

Explain how the ozone layer benefits living organisms. Why is the thinning ozone layer a concern?

What are the major effects of deforestation?

Near the ground, where ozone levels are naturally low, ozone is considered ____.

Precipitation is generally most acidic in which region of the United States?

Global climate change is caused by ____ and other greenhouse gases.

A species that faces extinction in all or part of its range is ____.

Match the term with the appropriate description. Terms may be used once or more than once. -gases released when bacteria feed on fertilizers and animal waste

Four of these five choices are global consequences of warmer temperatures. Select the exception.

Places that are home to species found nowhere else and are under great threat of destruction are called ____.