Chapter 48

True or false? Most species that evolved have already become extinct.

Dodos were driven to extinction _____. a. when humans arrived in North America b. by overharvesting and introduced species c. as a result of global warming d. by volcanic eruptions

An _____ species has population levels so low it is at great risk of extinction in the near future. a. endemic b. endangered c. indicator d. exotic

Sulfur dioxide released by coal-burning power plants contributes to _____. a. ozone destruction b. sea level rise c. acid rain d. desertification

5\. As a result of __________ an old animal usually has more pollutants in its body than a young one. a. bioaccumulation b. biological magnification

An increase in the size of the ozone hole would be highest pollutant load. a. increase skin cancers b. reduce respiratory disorders c. both a and b

Global climate change is causing _____. a. a decrease in sea level b. glacial melting c. acid rain d. all of the above

Use of CFCs was banned in order to _____. a. discourage desertification b. slow glacial melting c. lower sea level d. prevent ozone destruction

A highly threatened region that is home to many unique species is \(a(n)\) _____. a. ecoregion b. biome c. hot spot d. community

Biodiversity refers to ____. a. genetic diversity b. species diversity c. ecosystem diversity d. all of the above

Restoring a marsh that has been damaged by human activities is an example of _____. a. biological maynification b. bioaccumulation c. eculogical resturation d. globalization

Individuals help sustain biodiversity by _____. a. reducing consumption b. reusing materials c. recycling materials d. all of the above

Match the terms with the most suitable description. a. tree loss alters rainfall pattern and is difficult to reverse b. can increase dust storms c. evolved in one region and remains there d. coal-burning is a major cause e. results in highest pollution level at top trophic level f. good up high, bad nearby g. cause of rising sea level h. genetic, species, and ecosystem diversity ozone _____ biodiversity _____ acid rain _____ endemic species _____ biological magnification _____ global climate change _____ deforestation _____ desertification _____