Geography

Identify the term for the process that causes regions to become increasingly dry and desert-like.

• Drought

• Desertification

• Climate change

• Ozone depletion

The transfer of heat by vertical movement is ...

• conduction

• coriolis force

• latent heat

• convection

Gases in the atmosphere that absorb long-wave radiation and contribute to global warming are known as the ...

• radiation gases.

• thermosphere

• greenhouse effect

• greenhouse gases.

The layer of atmosphere closest to the earth’s surface is the ...

• mesosphere

• tropopause

• troposphere

• stratosphere

Chemicals used in some aerosol sprays, refrigerants, air conditioners and industrial cleaning materials are known as ...

• oxygen atoms.

• chlorine carbons

• pollutants

• chlorofluorocarbons