Correct answer
A. 3.7 million
Explanation
The correct answer is 3.7 million.
Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to:
Form of forest produced by retaining certain trees of the old crop after regeneration is completed known as:
Bunds, dams and drains are constructed to prevent:
Typical successions in forest are:
Migration flows: Some projects are undertaken to stop the movement of people from nural areas to urban areas / and:
Pinus gerardiana (Chalgozapine) period of ripening of seed: