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| 1 | |
List three abiotic factors in the environment of a fish. |
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| 2 | |
List three biotic factors in the environment of a song bird. |
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| 3 | |
How do an ecosystem, a population, and a community differ? |
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| 4 | |
Describe two ways that decomposers differ from herbivores. |
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| 5 | |
Name an organism that would occupy each of the following trophic levels: the producer trophic level, the second trophic level, and the third trophic level. |
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| 6 | |
How does each of the following organisms satisfy its energy needs: decomposer, plant, herbivore, omnivore, carnivore? |
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| 7 | |
What is the second law of thermodynamics and why is it important for understanding energy relationships in ecosystems? |
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| 8 | |
Why is the biomass of the herbivore trophic level larger than the biomass of the carnivore trophic level? |
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| 9 | |
List an advantage and a disadvantage to using each of the following for characterizing relationships among organisms in an ecosystem: pyramid of energy, pyramid of biomass, and pyramid of numbers. |
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| 10 | |
Trace the flow of carbon atoms through a community that contains plants, herbivores, decomposers, and parasites. |
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| 11 | |
Describe four different roles that bacteria play in the nitrogen cycle. |
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| 12 | |
Describe the flow of water through the hydrologic cycle. |
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| 13 | |
List three ways the carbon and nitrogen cycles are similar and three ways they differ. |
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| 14 | |
Describe the major processes that make phosphorus available to plants. |
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| 15 | |
Explain why poor people in countries with limited food must eat primarily grains. Explain this from both an economic and ecological point of view. |
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| 16 | |
Define the term productivity. |
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| 17 | |
What is the primary reason humans have destroyed natural ecosystems like prairies and deciduous forests? |
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