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Environmental Science

Environmental Science
The cutting down of trees and setting them on fire and raising crops on the resulting ash is called:

Taungya system
Pyrolysis
Shift cultivation
Jhum

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Environmental Science
The supersonic jets cause pollution by the thinning of

O2 layer
O3 layer
SO2 layer
CO2 layer

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Environmental Science
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

environmental resistances
fecundity
mortality
biotic control

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Environmental Science
The development of a bare area without any life form is called

Nudation
Sere
Ecesis
Reaction

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Environmental Science
In an aquatic ecosystem, the tropic level equivalent to cows in grasslands is

Benthos
Zooplankton
Nekton
Phytoplankton

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Environmental Science
Ecotype is a type of species in which environmentally induced variations are

None of these
Genetically fixed
Genetically not related
Temporary

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