Posted by Delilah on Wednesday, September 26, 2012 at 7:15pm.
Force exerted on an area is called _____. (1 point)
The composition of the atmosphere is changing due to _____. (1 point)
increase in CO2 (carbon dioxide)
all of the above
The _____ is the layer of the atmosphere farthest from Earth's surface. (1 point)
Chlorofluorocarbons harm the ozone layer by _______. (1 point)
adding more ozone molecules
blocking ultraviolet radiation
destroying ozone molecules
destroying oxygen molecules
Air pressure is greatest _____ because there are _____ molecules of air pushing down from above. (1 point)
at the top of a mountain; more
at sea level; more
in the troposphere; less
in the exosphere; less
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