It is widely accepted by scientists that chlorofluorocarbonsreleased into the atmosphere as a result of industrial refrigeration and insulation is the main cause of the huge gaps in the earth’s ozone layer.
(A) released into the atmosphere as a result of industrial refrigeration and insulationis
-Since subject "Chlorofluorocarbons" is Plural, plural verb "Are" should be used
(B) released into the atmosphere as a result of industrial refrigeration and insulation are
-
...
(A) released into the atmosphere as a result of industrial refrigeration and insulationis
-Since subject "Chlorofluorocarbons" is Plural, plural verb "Are" should be used
(B) released into the atmosphere as a result of industrial refrigeration and insulation are
-
...
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