31.
The organic matter produced by the photosynthetic activity of green plants is called as

32.
The head quarter of IUCN is located in

33.
The resources that are derived from bio-mass of living organisms are called ________ resources.

34.
Public awareness of environment creates ___________

35.
Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called

36.
_________ is an integration of several subjects that include both science and social studies.

37.
The Primary Consumers are also called as

38.
First Biosphere reserve in India

39.
Which among the following result in the formation of soil?

40.
The primary source of energy for the earth's atmosphere is: