Name ______Period __

Study Guide Biology unit 13 (Prentice Hall – Dragonfly book) chapter 6

Please answer all questions in complete sentences on a separate piece of paper.

1.  When the temperature of ocean water (or any water) goes up, what happens to the amount of CO2 (or any gas) that can be dissolved in it?

2.  In the very distant past, what types of groups did most people live in?

3.  What impact have imported plants in Hawaii had on native plants?

4.  How did the Americans, Europeans, and Asians who settled in the islands of Hawaii change the islands ?

5.  Early hunters and gatherers in North America may have been responsible for what impact on their environment?

6.  Which has become the most important source of environmental change on Earth, according to the IPCC?

7.  What is an environmental problem that resulted from the green revolution?

8.  What does land (as a resource) provide for humans?

9.  What type of resource is an old-growth forest considered to be?

10.  A resource, such as air or parts of the oceans, that is open to anyone is often preserved and protectedby what type of organization?

11.  Why are fossil fuels nonrenewable?

12.  What is using renewable resources while ensuring that they are not depleted?

13.  Describe the use of beneficial insects like ladybugs as an example of a sustainable-development practice.

14.  What concept should be practiced to live interdependently with nature’s systems?

15.  The sulfur and nitrogen compounds in smog combine with water to form what substance?

16.  What is the sequence of events that occurs when toxic chemicals are discarded into a stream?

17.  What is it called when erosion and other factors cause soil to lose its ability to hold water and other nutrients and to support plant life?.

18.  List several sustainable-development strategies for management of Earth’s resources.

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19.  What is the wearing away of surface soil by water and wind known as?

20.  How can farmers reduce soil erosion?

21.  How do habitat destruction &monoculture impact biodiversity?

22.  What are several ways to limit deforestation?

23.  What is biodiversity?

24.  Why is biodiversity important (and valuable?

25.  What is the sum total of the genetically based variety of living organisms in the biosphere ?

26.  What is meant by “a library of genetic information” in reference to biodiversity?

27.  Why is human well-being tied to biodiversity?

28.  What is an endangered species?

29.  What was DDT used for?

30.  What is one property that makes DDT hazardous over the long run?.

31.  What are current threats to biodiversity?

32.  What happens to the concentration in the tissues of organisms when DDT moves up the trophic levels in food chains, or food webs?

33.  What are the goals of conservation biology?

34.  An ecological “hot spot” is ..?

35.  What are the benefits of protecting an entire ecosystem ?

36.  Overexposure to UV radiation can cause…??

37.  An increase in Earth’s average temperature from the buildup of carbon dioxide and other gases in the atmosphere is called…?

38.  Some scientists think that global warming may be caused by what?

39.  What is the major cause of ozone depletion ?

40.  What would be the most likely effect of an increase in the use of CFCs?

41.  Carbon dioxide is released into the atmosphere by what processes (human and natural)?

Biology Unit 13