They emit harmful gases when burned.

They've been buried in the earth's crust for millions of years.

They're the most abundant energy source on the planet.

They're used to make gasoline.

Coal

Petroleum

Hydropower

Uranium (Nuclear)

Coal produces air pollution.

There isn't a lot of coal left which makes it expensive.

The world isn't using a lot of coal which makes it an undesirable job.

You can only use it to roast hot dogs and cook hamburgers.

Burning them creates air pollution

There is an infinite supply of them within the earth's crust

They are very difficult to refine into usable fuel

They are not carbon-based

are more cost-effective.

can be refilled or reproduced in a short period of time.

are environmentally friendly.

cannot be refilled or reproduced in a short period of time.

nuclear energy.

bio mass.

natural gas.

oil.

are sustainable (always available) and help the environment.

have a negative impact on the environment.

can be unreliable and inconsistent (unpredictable).

are expensive and not cost-effective.

require a large amount of land and space.

can be unreliable and inconsistent (unpredictable).

harm the environment.

can be expensive and not cost-effective.

help the environment.

are limited and will eventually run out.

are more expensive than some renewable energy sources.

contribute to air pollution.

leaving lights and appliances on at all times.

opening windows and doors to let in outside air.

using non-renewable energy sources.

using energy-efficient appliances, insulating homes, and using renewable energy sources.

renewable energy sources are less efficient.

renewable energy sources are generally more expensive.

renewable energy sources produce more pollution.

renewable energy sources can be refilled naturally and are not used up over time.

Nonrenewable Resources

Renewable Resources

solar

wind

water

natural gas

coal

oil

uranium

natural gas

can be used in a variety of ways.

can be easily replaced in a short time

are renewable