Question R11 Q5 - NSB 2011 Set 4

The Earth's greenhouse effect is primarily caused by which of the following:

W) incoming solar ultraviolet light is absorbed by the ozone layer

X) outgoing infrared solar radiation is trapped by the lower atmosphere

Y) incoming infrared solar radiation is trapped by the magnetic field

Z) outgoing X-rays are absorbed by the troposphere and reflected to the Earth's surface

Science Bowl Question