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15 Cards in this Set
- Front
- Back
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Bioaccumulation
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The gradual build- up of synthetic and organic chemicals in living organisms
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Biodergraduation
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the breaking down of dead organic matter by living organisms such as batercia
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carbonate
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a combination of carbon and oxygen that is dissolved in ocean water
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cellular respiration
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the process in which both plants and animals release carbon dioxide back into the atmosphere by converting carbohydrates and oxygen into carbon dioxide and water
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Decomposers
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organisms that break down wastes and dead organisms and change them into usable nutrients available to other organisms
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denitrification
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the process in which nitrogen is returned to the atmosphere
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food chains
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a model that shows the flow of energy from plant to animal and from animal to animal
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food pyramid
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a model that shows the loss of energy from one trophic level ecological pyramid
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food webs
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a model of the feeding relationships within an ecosystem; formed from interconnected food chains
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heavy metals
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metallic elements with a high density that are toxic to organisms at low concentrations
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keystone species
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species that can greatly affect population numbers and the health of an ecosystem
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nitrification
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the process in which ammonium is converted into nitrate
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nutrients
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substances such as the chemicals nitrogen and phosphorus that are required by plants and animals for energy, growth, development, repair, or maintenance; important components of nutrient cycles in the biosphere
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PCBs
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synthetic chemicals containing chlorine that are used in the manufacture of plastics and other industrail products, become stored in the tissue of animals, and also priest in the environment
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pesticidesa
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general term for chemicals that are used to eliminate pests, such as insecticides that kill weeds
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