Human Dependence on Natural Resources

Energy source used to replace fossil fuels.

• alternative
• renewable
• nonrenewable
• recyclable

Energy from the sun.

• wind
• hydroelectric
• solar
• biofuel

Takes millions of years to form.

• hydroelectric
• renewable
• solar
• fossil fuels

Source of energy for fossil fuels.

• swamp
• plants
• sun
• water

Solid fossil fuel formed from ancient plants.

• coal
• oil
• petroleum
• natural gas

A resource that can be easily replaced.

• renewable
• alternative
• nonrenewable

Plastic water bottles.

• nonrenewable
• alternative
• renewable

Timber, pork and corn.

• nonrenewable
• alternative
• renewable

Heat produced from magma within the earth.

• solar
• biofuel
• hydroelectric
• geothermal

Energy from living organisms.

• fossil fuels
• biofuels
• geothermal
• oil