A long period of time when there is no rain.

• drought

• flood

• ozone layer

• recycle

When heat cannot escape from the atmosphere and the temperature goes up.

• Environment

• Greenhouse effect

• Global warming

• Pollution

Any combustible organic material, as oil, coal, or natural gas, derived from the remains of former life.

• Biomass

• Renewable energy

• Fossil fuels

• Pollution

Which is NOT an example of renewable energy?

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Renewable energy

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Climate change

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If people _______________ (share) their cars to go to work, there won't be so many car fumes

If we only use the water we need, we ______________ contribute to our planet's recovery.

If everybody ________________ (continue) to use aerosols and CFCs, the hole in the ozone layer will get bigger

If you use spotlights savers, you __________ (pay) less light.