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A ______ resource is a material found in nature that is useful to humans.
natural
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______resources capable of being replaced at the same rate at which they are consumed.
Renewal
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_____- trees, water, and soil are examples of renewable resources.
Solar energy
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_____________-salt being removed from seawater.
Desalination
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______ resources that cannot be replaced once they are used or the rate of replacement is slower than consumption.
Nonrenewable
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Salt, diamonds, iron and gasoline - are examples of _____________ resource.
nonrenewable
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_____________- formed from decomposed plant and animal matter.
Fossil fuels
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____________ is a sedimentary rock that is developed from the remains of plants that grew in swamps.
Coal
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3 examples of _____________ are coal, petroleum and natural gas.
fossil fuels
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Methane, propane and butane are examples of _________, which are made from the elements of hydrogen and carbon.
hydrocarbons
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__________ can be identified by observing their physical properties such as hardness, color, luster, streak and cleavage.
Minerals
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____________ conduct heat and electricity.
Metals
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________ are extracted from the ground and are refined into valuable metals.
Ores
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_____________ piles are made by mixing leaves, flowers, hedge clippings, weeds, coffee grounds, egg shells and vegetable scraps together with nitrogen and water.
Composite
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The _________________ pile can be ready in 4 months.
compost
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