Fossil Fuels

materials in the environment that are useful to people

• fossil fuels
• natural resources
• renewable resources
• biofuels

fuels formed from decaying remains of plants and animals that lived millions of years go

• conservation
• hydroelectric power
• nonrenewable resources
• fossil fuels

natural resources that nature can produce again, such as tress, plants, animals, water, oxygen, and soil

• renewable resources
• nonrenewable resources 
• alternative energy source
• geothermal energy

natural resources, such as fossil fuels, that will eventually be used up and can never be replalced

• renewable resource
• biofuels
• hydroelectric energy
• nonrenewable resources

alternative energy sources

• fuels made from organic matter
• heat energy naturally produced within Earth
• sources of energy that do not come from fossil fuels
• materials in the environment that are useful to people

geothermal energy

• sources of energy that do not come from fossil fuels
• fuels made from organic matter
• electricity made from the energy of moving water in a dam 
• heat energy naturally produced with Earth 

hydroelectric energy

• heat energy naturally produced within Earth
• fuels made from organic matter
• electricity made from the energy of moving watetr in a dam
• sources of energy that do not come from fossil fuels

Conservation- the practice of decreasing the use of natural resources in order to save them

• True
• False

Biofuels- Fuels made from nonrenewable matter

• True
• False