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Renewable and Nonrenewable Resources

Teacher: Mrs. Hanson
Across
energy sources that include wind, moving water, and solar energy
the age of a fossil in years
the remains or traces of ancient organisms preserved in soil or rock
one that can be used up faster than it is made
Down
a living or nonliving resource that can be replaced naturally
a material that formed from the decay of ancient organisms and is used today as a source of energy
how old a rock is compared to another rock
a unit of time measured in millions of years