Vocabulary #14

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

Ozone Layer: a layer of ozone gas in the atmosphere that screens out much of the Sun´s UV rays.

Fossil Fuel: a fuel formed from the decay of ancient forms of life.

Smog: a mixture of smoke and fog.

Acid Rain: moisture that falls to Earth after being mixed with wastes from burned fossil fuels.