1. earth's ozone layer is responsible for absorbing from the sun
2. changes in the composition of the atmosphere have caused gradual changes in earth's
throughout history, causing changes in plant and animal life that contributed to mass
extinctions
3. chemical chlorofluorocarbons (cfcs) have been banned and replaced with _ which
destroy about 1% of the ozone that cfcs do.
4. naturally occurring volcanic eruptions can produce large amounts of gases that contain sulfur.
these gases accumulate in the atmosphere in the same way as man-made
5. greenhouse gases absorb infrared radiation and trap it as
respond to the following based on your reading.
6. briefly describe which environmental factors are responsible for the greenhouse effect.
responsere