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11.

Acclimatization means:

A.	The process by which plants and animals become accustomed to unusual environmental conditions	B.	That they are able to live and produce
C.	Both (a) & (b)	D.	None of these

12.

Acid rain means:

A.	A type of pollution which washes out of the atmosphere as dilute sulphuric and nitric acids	B.	It tends to be a regional rather than a global phenomenon linked to particular industrial activities and meteorological conditions
C.	Both (a) & (b)	D.	None of these

13.

The Arctic means:

A.	The north polar regions but it has also become used to denote the territory lying within the Arctic Circle	B.	The landscape, climate and plant and animal life found in those regions
C.	Both (a) & (b)	D.	None of these

14.

Biosphere means:

A.	The part of the earth that supports life and consists of the soil, oceans	B.	The waterways and the atmosphere upto 15 km above the earth's surface
C.	Waterways and the	D.	None of these

15.

Biosphere reserves means:

A.	The protected land and coastal areas	B.	That are approved under the Man and the Biosphere
C.	In conjunction with the Conception on International Trade in Endangered Species (CITES)	D.	All of the above

16.

Biota means:

A.	The general description of all the flora and fauna of the planet	B.	It covers all living things from the tiniest submicroscopic organism to the elephant and giant redwood tree
C.	All of which are supported by the biosphere	D.	All of the above

17.

Boreal forest is:

A.	The large coniferous forest areas in the northern hemisphere between the latitudes of 50	B.	Large areas of boreal forest are found in Scandinavia, Siberia and Northern America
C.	Both (a) & (b)	D.	None of these

18.

C3 plants means:

A.	A group of plants including the soya bean wheat and cotton.	B.	The process of carbon fixation during photosynthesis
C.	The prod use a compound essential for growth that consists of molecules each containing three atoms of carbon	D.	All of the above

19.

C4 Plants means:

A.	A group of plants which include maize and sorghum	B.	The process of carbon fixation usually found in tropical plants with high growth rates
C.	Both (a) & (b)	D.	None of these

20.

Foraminifera means:

A.	An abundant family of simple mostly marine organisms	B.	The important to scientists who are studying climatic change
C.	Both (a) & (b)	D.	None of these