what contributed to the recovery of the ozone layer?

an increase in the earth's surface temperature

a treaty that banned the use of aerosol cans

an increased volume of chlorofluorocarbon use

a decrease in the amount of ultraviolet radiation produced by the sun

What statement about charlemagne is not true? a. charlemagne's empire collapsed during his rule b. charlemagne sent missionaries throughout europe c. charlemagne encouraged the arts and education d. charlemagne ruled much of western europe a. charlemagne's empire collapsed during his rule