What are natural resources?

To save, collect and reuse materials instead of treating them as waste is called?

Energy given off by the sun is called?

A nonrenewable energy source known as oil is also called?

To use what you need as efficiently as possible is called?

Which is the nonrenewable energy source? (coal, oxygen, trees, tomatoes)

The dark brown part of soil made up of rotting plants and animals is called?

A mineral rich rock deposit that can be removed from the earth is called

Fuels made from the remains of living things that died millions of years ago are called?

All energy found in fossil fuels can be traced to __________

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