Ozone 
.... are getting thinner, and there is some controversy as to whether this is due to human activity, specifically the use of chemicals known as
CFCs and
HCFCs. ....
(333
1
)
The Ozone Hole
.... pose health problems. Unfortunately, these
HCFCs also deplete the ozone layer, but not as severely as
CFCs. According to Eileen ....
(2747
11
)
Ozone Depletion
.... This legislation called for the complete phaseout of
CFCs, halons, and carbon .... Additionally, the phaseout of both methyl chloroform and
HCFCs will occur in the ....
(3023
12
)
Depletion of the Ozone Layer The Earth's upper atmosphere cont
.... This legislation called for the complete phaseout of
CFCs, halons, and carbon .... Additionally, the phaseout of both methyl chloroform and
HCFCs will occur in the ....
(3020
12
)
Ozone Depletion
.... This legislation called for the complete phaseout of
CFCs, halons, and carbon .... Additionally, the phaseout of both methyl chloroform and
HCFCs will occur in the ....
(3313
13
)
Ozone Depletion The Earth's upper atmosphere cont
.... This legislation called for the complete phaseout of
CFCs, halons, and carbon .... Additionally, the phaseout of both methyl chloroform and
HCFCs will occur in the ....
(3316
13
)
