Vocabulary #15

1.Renewable resource: A resource that can be replaced in a short period of time.

2.Ozone layer: A layer of ozone gas in the atmosphere that screens out much of the sun`s UV rays.

3.Fossil fuel: A fuel formed from the decay of ancient forms of life.

4.Smog: A mixture of smoke and fog.

5.Acid rain: Moisture that falls to earth after being mixed wirh wastes from burned fossil fuel.