Vocabulary # 15 - Earth's Atmosphere

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.