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Ecosystem Definition
all the interacting parts of a biological community and its environment
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Sustainable ecosystem Definition
an ecosystem that is capable of withstanding pressure and giving support to variety of orgnisms
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Biotic Definition
the living parts of an ecosystem E.g Plants and animals
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Lithosphere Definition
the hard part of Earths's surface
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Hydrosphere Definition
all the water found on Earth, including lakes, oceans, and ground water
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Atmosphere Definition
the layer of gases above Earth's surface
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Biosphere Definition
the regions of Earth where living organisms exist
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Abiotic Definition
the non-living parts of an ecosystem e.g rocks, water and oxygen
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Nutrients Definition
a chemical that is essential to living things and is cycled through ecosystems
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Eutrophication Definition
a process in which nutrient levels in aquatic ecosystems increase in the populations of primary producers
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Photosynthesis Definition
a process that changes solar energy into chemical energy
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Trophic Level Definition
a category of organisms that is defined by how the organisms gain their energy
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Trophic Efficiency Definition
a measure of the amount of energy or biomass transferred from one trophic level to the next higher trophic level
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Biomass Definition
the total mass of living organisms in a defined group or area
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Bioaccumulation Definition
a process in which an organism ingests materials, especially toxins, faster than it eliminates them
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Biomagnification Definition
a process in which the concentration of ingested toxins increases as it moves from one trophic level to the next
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Cellular Respiration Definition
a process that releases energy from organic molecules, especially carbohydrates, in the presence of oxygen
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Fermentation Definition
a process that releases energy from organic molecules, especially carbohydrates, in the absence of oxygen
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Greenhouse gases Definition
an atmospheric gas that prevents heat from leaving the atmosphere, thus increasing the temperature of the atmosphere
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Greenhouse Effect Definition
the warming of Earth as a result of greenhouse gases, which trap some of the energy that would otherwise leave earth
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Acid precipitation Definition
rain, snow or fog that is unnaturally acidic due to gases in the atmosphere that react with water to form acid
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