1.

Identify the correct statements from the following:(a) CFCs are responsible for the depletion of the Ozone layer.(b) Water vapor, methane, CO2 CFCs., nitrous oxide are greenhouse gases.(c) The BOD value of pure water is 100 ppm.

A. (a), (b)
B. (a), (c)
C. (a), (b), (c)
D. (b), (c)
Answer» B. (a), (c)


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