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Ecology, Ecosystems, and the Environment Essay

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Below is an essay on "Ecology, Ecosystems, and the Environment" from Anti Essays, your source for research papers, essays, and term paper examples.

Chapter 19
Ecology, Ecosystems, and the Environment:
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Are human activities affecting the global environment?

1. The flow of energy in an ecosystem
a. decreases by 90% at each trophic level.
b. is a discrete amount transferred without change.
c. transfers from plants to carnivores to herbivores.
d. is wasted by the decomposers.
e. all of the above
Ans: a
Link To: Ecology and Ecosystems
Difficulty Level: Easy

2. Which of the following initiated the law of unintended consequences at Lake Victoria in Africa?
a. clear cutting of old growth pine trees
b. building jetties on the Lake Victoria shore
c. introducing the Nile perch
d. growing algae for a aquaculture
e. constructing lake-front apartments
Ans: c
Link To: The Law of Unintended Consequences
Difficulty Level: Easy

3. Urban landfills use procedures that
a. increase the decay rate for most trash.
b. accelerate the process by which aluminum is recycled.
c. decrease the decomposition rate for newspapers.
d. increase the number of aerobic bacteria.
e. make it cost effective to recycle glass.
Ans: c
Link To: Threats to the Global Ecosystem and Environment
Difficulty Level: Easy

4. A national recycling program is inhibited by
a. lack of a market for some recycled products.
b. the fact that each type of trash requires a unique chemical process to be recycled.
c. the sheer volume of trash needing to be processed.
d. America's "use it and lose it" attitude.
e. all of the above
Ans: e
Link To: Threats to the Global Ecosystem and Environment
Difficulty Level: Easy

5. Which term refers to the particular way an organism obtains energy?
a. ecosystem
b. environment
c. ecology
d. ecological niche
e. habitat
Ans: d
Link To: The Law of Unintended Consequences
Difficulty Level: Easy

6. Which statement about an ecosystem is correct?
a. Organisms get their energy from the same trophic level.
b. Ecosystems are formed from...

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