APES

AP EXAM REVIEW 2

1. The following are all pollutants in the atmosphere, with one exception. Choose the exception.

a. carbon monoxide

b. nitrogen dioxide

c. nitrogen gas

d. ozone

2. All of the following are greenhouse gasses, except

a. carbon tetrachloride

b. carbon dioxide

c. methane

d. nitrous oxide

3. Is there really an extinction crisis?

a. No, we don't even know how many species there are, so it is

impossible to estimate current extinction rates.

b. No, extinctions are rarely documented, so that must mean that

they didn't happen, especially for species we've not catalogued

yet.

c. Yes, all evidence points to extinction rates being greater than

estimated background extinction rates.

d. Yes, most evidence suggests that extinction over the past half

century have been increasing for many groups of organisms.

4. Swamps

a. are wetlands dominated by trees.

b. play a role in filtering pollutants.

c. make up a very tiny percentage of Earth's surface.

d. can absorb excess water during floods and release water

during droughts.

e. all of the above.

5. Which of the following farming practices is the most common cause of salinization?

a. pesticide use

b. use of genetically engineered crops

c. irrigation

d. use of hybrid crops

6. Which of the following techniques reduces fertilizer run-off into streams?

a. contour plowing

b. filter strips

c. crop rotation

d. all of the above

7. The sewage treatment that physically removes mostly suspended particles

a. primary

b. secondary

c. tertiary

d. quatenary

8. The process of water moving through the soil towards the ground water is

a. evaporation

b. infiltration

c. percolation

d. condensation

9. Which of the following organisms is causing problems with fish kills and human health along the Atlantic coast?

a. Pfeisteria

b. Giardia

c. Cryptosporidium

d. E. coli

10. Which of the following water pollutants directly reduce light penetration?

a. infectious agents

b. nitrates

c. sediments

d. thermal

11. In experimental design, a variable that is held the same throughout an experiment is termed

a. constant

b. manipulated

c. responding

d. dependent

12. Currently, world population is at

a. 6.5 million

b. 10 million

c. 6.5 billion

d. 10 billion

13. The portion of the soil with the smallest size is

a. clay

b. gravel

c. silt

d. sand

14. The farming technique called polyculture involves

a. growing several different kinds of crops.

b. growing crops using methods from several different cultures.

c. growing crops made with hybrid seeds.

d. growing crops that are highly profitable.

15. A population interaction in which both species benefit is

a. competition

b. predator-prey

c. commensalism

d. mutualism

16. An animal that eats both plants and animals is a(n)

a. carnivore

b. herbivore

c. omnivore

d. detritivore

17. In an ecosystem, the decomposers are the

a. bacteria and fungi

b. fish

c. seeds and nuts

d. birds

18. In an ecosystem, the producers get the nutrients they need

a. from the sun

b. from non-living sources

c. by eating other organisms

d. none of the above

19. The process of nitrogen fixation in an ecosystem is accomplished by

a. blue-green algae

b. fungi

c. dragonflies

d. oak trees

20. Which of the following is an abiotic components of an ecosystem?

a. algae

b. worms

c. sand

d. dandelion