Principles of ecology – Flashcards
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Energy that is lost at each trophic level of an ecosystem is replenished by
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Sun light
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Besides energy what moves through the organisms at each trophic level of an ecosystem.
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Nutrients
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Evaporation and condensation are part of the
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Water cycle
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Plants lose water to the air through
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Evaporation
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Animals lose water when they
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Urinate, breath out
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The major process by which water in the atmosphere is returned to the earth
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Photosynthesis
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Autotrophsand heterortrophs use carbon cocontaining molecules for energy and for
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Growth
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What do plants use in photosynthesis to make carbon
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Carbon dioxide
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Heterortrophs get carbon containing molecules by
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Feeding on other organisms
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When decomposers break down in dead organisms
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Carbon dioxide is released
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Fertilizers provide plants with
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Nitrogen
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Nitrogen from air into a form plants can use
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Lighting , sunlight
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Plants use nitrogen to make
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Amino acids
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An animal returns nitrogen to the everioment when it
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Decomposes, urinates
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Animals get phosphorus from
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Eating plants
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Decaying organisms
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Phosphorusin the soil comes from
