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16 Cards in this Set

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