Which problem  is caused by high levels of chlorine and bromine compounds on the stratosphere?

Statistics deals with __________.

_________ leads to land degradation, biodiversity  loss and air pollution.

Ozone layer prevents most harmful wavelengths of ultraviolet light from passing through the

From 1979 to 1990, ozone layer was reduced by

The number of motor vehicles has increased from about ________ in 1951.

In which fuel used by transportation in Delhi?

The black soil of the Deccan plateau is particularly suitable for cultivation of

Trichloroethane is also known as

In India, ________ is widespread in urban areas.