Human Impact Review
(We did this in class)
Answer the questions and check your answers at the end.

1. Name 3 benefits ecosystems provide BESIDES provide OXYGEN and clean WATER.

2. Any harmful material that can enter the biosphere through land, water, or air is called a __________________.

3. MATCH the following with the environmental problem it was intended to help. (You can use them more than once)

____ KYOTO ACCORD                             A. endangered species
____ MONTREAL PROTOCOL                  B.  Ozone depletion
____ CITES                                             C.  Global climate change

4. Ecosystems with _______ biodiversity are healthier and more stable.

                 LESS           MORE   


5. Putting a road through the middle of a National forest is an example of ______________.

6. Adding more _____ gas to the oceans is causing them to become more acidic, harming coral reefs, and animals with shells made of calcium.


7. The addition of _______ gases into the atmosphere caused the depletion of the protective ozone layer.

8.   The increasing concentration of a harmful chemical at higher trophic levels in a food chain is called ____________.

9. Name a harmful consequence of too much ultraviolet light.

10. Although this is changing, the majority of the electricity in the United States is produced by which type of energy?

11.   ________________are plants or animals that have migrated or been introduced into places where they are not native and for which there are no natural predators or parasites to control their population

12. Give a South Dakota example of #11.

13.  Which of the following can be caused by burning fossil fuels?
(There is more than one right answer)

    A. ozone depletion                      H. invasive species
     B. smog                                     I. sea level rise
     C. acid rain                               J. acidification of oceans/coral bleaching
     D. global climate change             K. melting ice caps
     E. Dead zones                            L. more severe storms
     F. more wildfires                       M. heat waves/drought
     G. negative health effects          N. endangered species
           (like asthma)                     

14. Which widely used pesticide caused the decline in fish-eating bird populations (like Bald Eagles) because it caused birds to lay eggs with fragile shells?

15. The process that follows an algal bloom, in which lack of sunlight and break down of dead organisms by decomposers creates low oxygen areas that result in the death of plants and animals is called ________________.

16. Which environmental problem is  getting better because countries agreed on a plan of action and actually followed through on their commitments?

17. NAME the
governmental body whose job it is to monitor and enforce environmental regulations, provide education on environmental issues, conduct environmental research, and provide funding for environmental programs.

18. Tell something farmers can do to lessen the impact of agriculture on the environment.

19. What is the chemical formula for ozone?


20. “Invisible” water is the water that __________________

  A. is stored in an aquifer beneath the ground we can’t see
   B. we don’t realize is required to make products we use.  
C. we can’t see in water towers and plumbing.
   D. is wasted when we leave the faucet running.

21. What is the cause of Dead Zones?

22.  Explain how deforestation can also impact global climate change?

23. Fresh water is a ______ resource.
       A. renewable
         B. nonrenewable
         C. renewable but limited

24. Name a negative environmental impact fracking can have on ecosystems. 

25. Give an example of an alternative energy source and tell one advantage it has over burning fossil fuels.

26.  ______ is an endocrine disruptor found in plastics that has been linked to cancers, miscarriages, diabetes, and change in sex in some fish and amphibians.

27. The “greenhouse effect” is harmful to the planet and should be totally eliminated.

                 TRUE          FALSE

28. _____________ is a process caused by a combination of poor farming practices, overgrazing, and drought that turns productive land in areas with dry climates into deserts. 

29. A species whose population size is rapidly declining and will become extinct without intervention is called ____________.

30.  The giant aquifer that supplies water for drinking and agricultural irrigation to much of the Midwest is called the ___________ aquifer. 

31. Name the law, passed to protect endangered species, that prevents buying or bringing into the United States anything that comes from an endangered animal.

32. Give 2 examples of greenhouse gases.



33. A ____________ is the total set of GHG (greenhouse gas) emissions caused directly and indirectly by an individual, organization, event or

34. In 2011 an earthquake and following tsunami caused an accident at the Fukushima nuclear power plant in Japan which released large amounts of radioactivity into the environment. Name one effect of radioactivity on organisms.

35. One way to help endangered animals is ___________ breeding, which allows
animals to reproduce in zoos or sanctuaries until their population numbers increase and they can be   released into the wild.

36. Sulfur and nitrogen compounds from burning fossil fuels combine with water to form _________.

37.  Biological  “__________” are places where organisms are most endangered and where our limited $ will have the most impact.

38.   _______________ , the growing of large areas of the same crop year after year, can increase food production but has many negative impacts on ecosystems.

39 ________________ DEVELOPEMNT is a way of using natural resources without depleating them and of providing for human needs without causing long term harm to the environment. 

40. Explain how rotating corn with legumes like soybeans can reduce the use of fertilizer.














1. medicine, light, building materials, flood control, natural pest control, filter out pollution, store carbon, recycle nutrients, make soil, prevent erosion,  moderate climate, homes for wildlife, recreation, inspiration
2. pollutant

    A. CITES
    C. 2016 Paris
4.  MORE
5. Habitat fragmentation
6. CO2
7. CFC’s (chlorofluorocarbons)
8. Biological magnification
9. Sunburn, skin cancer, cataracts, premature aging/wrinkles, decreased crop yield
10. Burning fossil fuels
11.  Invasive species
12. Asian carp, Zebra mussels, Pine bark beetle, leafy spurge, rusty crayfish. . . . there are more
13. All EXCEPT ozone depletion (A)  and dead zones (E)
14. DDT
15. eutrophication
16. Ozone depletion
17. Environmental Protection Agency (EPA)
18. No-till plowing, GPS/satellite technology, crop rotation, controlled grazing, biological pest control, contour plowing, cover crops
19. O3
20. B. water we don’t realize is required to make products we use
21. runoff of fertilizer and manure
22. Trees remove CO2 during photosynthesis; fewer trees =more CO2 stays in atmosphere which increases global warming/climate change
23. C renewable but limited
24. Contamination of soil/groundwater, earthquakes, ability to light tap water on fire
25. Solar, wind, nuclear, tidal, waves, geothermal, biodiesel, algae,
See your alternative energy organizer
26. BPA
27. False; it is natural and acts as a blanket to keep the earth warm
       Humans have changed the amount of greenhouse gases in the atmosphere and making it warmer than normal.
28. desertification
29. endangered
30. Ogallala
31. CITES (Convention on International Trade in Endangered Species)
32. CO2, Methane, water vapor, CFC’s
33.  Carbon footprint
34. Cancer, DNA mutations, birth defects, death
35. Captive
36. Acid rain
37. hotspots
38. monoculture
39. sustainable
40. Legumes have symbiotic nitrogen fixing bacteria on their roots which put nitrogen into the soil so less fertilizer is needed