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Upper Elementary Science - II
4.19 Energy Sources
: Energy from dead plants and animals is called ___.
: A natural resource is something that we use that comes from the ___.
: Putting storm windows outside another window keeps heat from escaping because air is a good
: To use resources wisely is to
heat with natural gas
only use solar energy
: A material that energy moves through easily is
: Four natural resources that can be used as fuel are coal, oil, natural gas, and
: To stay warm, birds line their nests with materials that are good
sources of fuel
: Natural resources that are used to heat homes are
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