Loss of part of the Earth's cryosphere will exert a positive radiative forcing effect on climate change because
A) more of the sun's radiation will be reflected into space.
B) ocean thermal expansion will be increased.
C) the overall albedo of the planet will be decreased.
D) less carbon dioxide will be absorbed from the atmosphere by plants.
Question 2
The two highest levels of the atmosphere contain only small amounts of oxygen, nitrogen, and ozone. These layers are the
A) mesosphere and thermosphere.
B) thermosphere and stratosphere.
C) stratosphere and troposphere.
D) thermosphere and troposphere.