There is the same amount of energy today as when the world began.

An energy source that is gone forever once it is used up is called?

Energy that comes from natural resources that can be replenished are called ?

What can poison our water and air and harm all life on earth?

What are the three R's that we can do to help save the earth?

A windmill is a renewable energy source

Wheat, chickens, tomatoes and tobacco are nonrenewable energy sources

Which is the nonrenewable energy source?

Which is the renewable energy source?

to save collect and reuse materials instead of treating them as waste is called

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