(B) Jhum cultivation,also known as slash-and-burn agriculture,is a traditional farming practice where a patch of forest land is cleared by cutting dow

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(B) Jhum cultivation,also known as slash-and-burn agriculture,is a traditional farming practice where a patch of forest land is cleared by cutting down trees and burning the plant remains. The ash is used as fertilizer,and the land is then used for farming. This practice is widely prevalent in the $North-eastern$ states of India.

Class 12 Biology Environmental Issues Mix Example-Environmental Issues

Easy

Jhum cultivation is prevalent in $.................$.

A
South-eastern states
B
North-eastern states
C
East-northern states
D
East-western states

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Environmental Issues

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Mix Example-Environmental Issues

Which of the following is not a conventional source of energy?

Medium

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Identify the correctly matched pair.

EasyAIPMT 2005

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Contour farming is usually employed in

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Match the following columns:

Column-$I$ Column-$II$

$(a)$ Biomagnification $(1)$ Nitrates and Phosphates

$(b)$ Eutrophication $(2)$ Chlorine

$(c)$ Global warming $(3)$ $DDT$

$(d)$ Ozone depletion $(4)$ Greenhouse gases

Column-$I$	Column-$II$
$(a)$ Biomagnification	$(1)$ Nitrates and Phosphates
$(b)$ Eutrophication	$(2)$ Chlorine
$(c)$ Global warming	$(3)$ $DDT$
$(d)$ Ozone depletion	$(4)$ Greenhouse gases