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11 Cards in this Set
- Front
- Back
ecology
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scientific study of how organisms interact with their environment and all the other organisms that live in the environment.
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ecosystem
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describe a particular environment and all the living things that are supported by it.
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biotic factor
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living parts of an ecosystem. it interacts with ecosystem, such as Plants and Animals
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abiotic factor
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nonliving parts of an ecosystem. it affect ecosystem. such as air, soil, water, temperature and light.
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cycle
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a series of events that happens over and over again.
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water cycle
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the movement of water through the environment. 3 forms: vapor (gas), liquid, ice (solid)
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carbon cycle
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carbon moves through Earth's ecosystem in a cycle through CO2 (carbon dioxide)
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name three ways that living things are part of the carbon cycle
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(1)plants use CO2 to product sugar (photosynthesis). (2)organisms break down the carbon compounds to release energy in food (3) when living htings die and decay, they release carbon.
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nitrogen cycle
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nitrogen cycles through earth. even though 80% of air are nitrogen, all animals must get nitrogen from plants.
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how nitrogen moves through environment
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(1)lightning strikes break apart (fix) pure nitrogen into a form that plants can use. it falls with rains.(2) nitrogen-fixing bacteria lives in soil and ocean, die and break down. the nitrogen then is used by living things.
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temperature and water cycle
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changes in temperature help water move through the environment. via freezing and evaporating
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