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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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