Why the investigations carried out by Sherwood
Rowland and Mario Molina in the early nineteen seventies (1970s) became very
important and famous?

Question

Answer

They predicted the accumulation of the CFCs in
the stratosphere and the probability of the depletion of the ozone layer there.

Answer

They could estimate, for the first time, the
global warming effect of HFCs and HCFCs.

Answer

They predicted, for the first time, about the forthcoming
global warming and its adverse effects on humans and the environment.

Answer

They invented alternatives for the CFCs that
will not reach the stratosphere due to the presence of H atoms.

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