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Soil Erosion
n/a
10
Science
4th Grade
07/07/2014

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Cards

Term
soil
Definition
loose rock mineral
Term
natural resources
Definition
any useful material from Earth
Term
conservation
Definition
the wise use of natural resources
Term
topsoil
Definition
a mixture of weathered rock and humus
Term
subsoil
Definition
reddish or yellowish layer made up largely of clay particles that have been weathered out of the rock below
Term
rock
Definition
solid material made up of one or more minerals
Term
mineral
Definition
a natural solid that has a definite chemical makeup
Term
ore
Definition
rock that can be mined for the minerals it contains
Term
renewable resource
Definition
a resource that can be replaced
Term
nonrenewable resource
Definition
a natural resource that can't be replaced
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