Select the correct statement.

Options

A. Amount of greenhouse gases i.e., `CO, CO_(2), CFCs` and `CH_(4)` is decreasing due to harmful activities in atmosphere.
B. Increase in average global temperature could lead to melting of polar ice caps.
C. Ozone layer present in mesosphere, protects earth from harmful effects of solar radiations.
D. Putrefying bacteria help to convert ammonia into nitrites and then into nitrates.

Answer

B