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Essay Quiz
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1
Why is a food web better than a food chain as a way to describe a community?
2
As the number of insects declines in the autumn, what would you expect to happen to bird populations?
3
List 10 items that are a part of your niche.
4
What is the difference between habitat and niche?
5
What do parasites, commensal organisms, and mutualistic organisms have in common? How are they different?
6
Describe two situations in which competition may involve combat and two that do not involve combat.
7
How is the competitive exclusion principle related to the theory of natural selection?
8
In what way are predators and parasites similar in the way they interact with other species? How do they differ in how they interact with other species?
9
List a predominant abiotic factor in each of the following biomes: temperate deciduous forest, boreal coniferous forest, grassland, desert, tundra, temperate rainforest, tropical rainforest, and savanna.
10
List a dominant producer organism typical of each of the following biomes: temperate deciduous forest, boreal coniferous forest, grassland, desert, tundra, temperate rainforest, and savanna.
11
How do phytoplankton and zooplankton differ?
12
Describe how the producers of benthic and pelagic ecosystems differ.
13
List two ways in which the kinds of organisms present in lakes differ from those in shallow parts of the ocean.
14
Describe two abiotic differences between an estuary and the ocean.
15
How does primary succession differ from secondary succession?
16
How does a climax community differ from a successional community?
17
Describe the steps in secondary succession of abandoned farmland to a climax community.
18
Describe the steps in succession of a pond to a climax community.
19
Describe three important factors that determine the kind of climax community that will develop in an area.
20
Why do DDT and PCBs increase in concentration in the bodies of organisms at higher trophic levels?
21
What is the most common form of habitat destruction practiced by humans?
22
List three introduced species that have become pests and explain why they became pests.
23
What happens to a community of organisms when predators are eliminated?
24
Describe two negative consequences of using pesticides.







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