previous studies indicate about half of global warming is canused by carbon
dioxide gas from fossil fuel burning, about 20 percent is due to chemicals called
chlorofluorocarbons, of CFCs, and an additional 20 percent is caused by methane,
which is natural gas. Other trace gases cause the remaining warning
a. Methane,natural gas increase futube temperature.
b. Fossil fuel burning heats earth's atmosph.
c. Chlorofluorocarbons CFCs are dangerous chemicals.
d. Carbon dioxide, CFCs,and methane cause global warming.
previous studies indicate about half of global warming is canused by carbondioxide gas from fossil fuel burning, about 20 percent is due to chemicals calledchlorofluorocarbons, of CFCs, and an additional 20 percent is caused by methane,which is natural gas. Other trace gases cause the remaining warninga. Methane,natural gas increase futube temperature.b. Fossil fuel burning heats earth's atmosph.c. Chlorofluorocarbons CFCs are dangerous chemicals.d. Carbon dioxide, CFCs,and methane cause global warming.
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