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16 Cards in this Set
- Front
- Back
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Respiration
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process when oxygen is mixed with food molecules to produce energy, water, and carbon dioxide
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Photosynthesis
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Process when plants use light to convert carbon dioxide and water into sugar and oxygen
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renewable resource
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one that can be replaced in nature close to the rate of its use
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nonrenewable resource
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exists in a fixed amount and is used up faster than it can be replaced
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soil fertility
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ability of soil to grow plants
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soil depletion
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nutrients are taken from the soil
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salinization
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water evaporates because of heat and leaves minerals such as salt behind
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eutrophication
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oxygen in lakes is used up faster than it can be replaced
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ore mineral
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rocks from which elements can be removed
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mineral reserves
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amount of known deposits of minerals in ore worth mining
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fossil fuels
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natural fuels made from the remains of plant and animals that lived long ago
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acid rain
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polluted rain caused by nitrogen and sulfur oxides released into the air by burning of coal and car exhausts
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toxic wastes
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poisonous byproducts of some industrial processes
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environment
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all of the resources, influences and conditions of the Earth's surface
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gangue
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nonvaluable rock where valuable minerals or metals are
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pollution
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when part of the environment is changed in a way that makes it unfit for human, plant and animal use.
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