1. Resources and Living Things
Chapter 3 Test Review

2. Air pollution in Los Angeles is what type of source?
nonpoint source

3. Occurs naturally in the environment and is used by people.
natural resource

4. Contamination of Earth’s land, water, or air.
pollution

5. Decisions about how to protect Earth’s atmosphere are made on what level?
global

6. environmental scientists
Who provides the data that is considered when resolving an environmental issue?
environmental scientists

7. What causes a demand for resources to grow?
population growth

8. Three general categories of environmental issues.
pollution resource use population growth

9. What type of proposals have costs and benefits that are often economic?
environmental

10. Can be grouped in two categories, point source and nonpoint source.
pollution

11. Fresh water is an example of what type of resource?
natural resource

12. Humans depend on natural resources for what two reasons?
survival and development

13. Allows resources to last longer.
conservation

14. What makes a larger ecological footprint?
high level of resource use

15. Using a resource in ways that maintain the resource at a certain quality for a certain period of time.
sustainable use

16. Resources that are replaced as fast as they are used.
renewable resource

17. Natural resources that were formed over millions of years.
oil and coal

18. Determines a population’s life or death.
health and disease

19. Today’s human population of Earth.
more than 7.1 billion

20. Experts agree or disagree over whether the human population will stop growing?

21. Do people live longer in most areas of the world today than ever in human history?
yes

22. Occurs when a population grows at an ever-increasing rate.
exponential growth

23. medicine and technology
Advances in what have improved human health and allowed for tremendous population growth?
medicine and technology

24. As the human population grows, the demand for what increases?
natural resources

25. If population and the demand for natural resources continue to grow, will the human population be too large for Earth to support?
yes

26. An area with a large population of valuable ocean organisms.
fishery

27. Raising water-dwelling organisms for food in an artificial pond.
aquaculture

28. Why can forests be renewable resources?
New trees can be planted to replace trees that are cut down

29. Cutting down only some trees in a forest.
selective cutting

30. setting fishing limits
Approach to managing fisheries that can involve banning or restricting fishing of certain species.
setting fishing limits

31. to manage resources for a sustainable yield
Fishing methods like poisoning fish with cyanide are outlawed for what reason?
to manage resources for a sustainable yield

32. One disadvantage of clear-cutting.
erosion

33. How trees help other organisms.
they produce oxygen and absorb carbon dioxide

34. What percentage of the US land area is made up of forests?
1/3

35. Major cause of distinction.
habitat destruction

36. Species that could become endangered in the near future.
threatened species

37. Endangered Species Act
Prohibits trade or products made from threatened or endangered species.
Endangered Species Act

38. The most effective way to preserve biodiversity.
protecting whole ecosystems

39. Has both an economic and ecological value within an ecosystem.
biodiversity

40. Influences the survival of many other species in an ecosystem. (ex
Influences the survival of many other species in an ecosystem. (ex. sea otter)
keystone species

41. Affect biodiversity in an ecosystem?
climate, area, and diversity

42. The most diverse ecosystems in the world.
rain forests

43. How can people directly cause the extinction of some species?
habitat destruction hunting