Things that can continue to be used and not run out easily (like the sun, wind, water) are:

• Fossil fuels

• Conservation

• Energy

• Renewable resources

Things that humans use that occur naturally in nature (like sun, wind, oil, trees, sand, etc.) are:

• Conservation

• Energy

• Generator

• Natural resources

Click all of the Natural Resources

• Trees

• Metal

• Plastic

• Animals

Things that can eventually run out and can be hard to replace (like oil, gas, and coal) are:

• Non-renewable resources

• Energy

• Renewable resources

• Conservation

The main sources of energy used by humans today which formed millions of years ago out of dead plants and animals and are deep underground (like oil, natural gas, and coal) are:

• Conservation

• Fossil fuels

• Energy

• Renewable resources

What is power that comes from the use of resources?

• Conservation

• Fossil fuels

• Energy

• Natural resources

Select all of the Fossil Fuels below:

• Trees

• Oil

• Natural Gas

• Sand

• Coal

The careful use of resources so that they will last as long as possible is:

• Conservation

• Energy

• Natural resources

• Non-renewable resources