Which have been able to check the rapid growth of population:-

Biogas is composed of:-

Which gas cause the least air pollution:-

Deforestation generally decrease :-

The study of poison is called :-

Public awareness of environment creates:-

When number of food chains is interlocked this is called:-

In middle latitude , which cloud will have the lowest base:-

Sedimentary rocks are:-

Evaporation from water surfaces  exposed to air is not dependent of the:-

Pakistan adopted the technique of using dwarf varieties of grain in:-

Biosphere reserve project was initiated in India during:-

The only species of cat that lives and hunts in groups is:-

The ' Vienna Convention' related with environment is basically related with;-

Autecology deals with:-

Which book written by Rachel Carson resulted in banning DDT in USA:-

Acid rain mainly result from:-

The primary source of energy for the earth's atmosphere is:-

Man and biosphere programme is affiliated with:-

Which one is a radioactive element:-

Red data book contains data of;-

The most abundant gas in the stratosphere is:-

In a temperature inversion:-

A device used to measure the amount of moisture in the atmosphere is called a:-

World environment day is celebrated every year on;-