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Environmental Science

Environmental Science
When human body is infected by infection __________ type of cells are activated to defend the body.

monocytes
leukocytes
lymphocytes
erythrocytes

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Environmental Science
Plants which grow in shade are called

Sciophytes
Oxylophytes
Epiphytes
Heliophytes

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Environmental Science
Man made sources of radiation pollution are:

mining
nuclear fuels and preparation of radioactive isotopes
explosion of nuclear weapons
all of these

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Environmental Science
The formation of a climax community from an abandoned farm land is a an example of

Allogenic succession
Primary succession
Secondary succession
Autogenic succession

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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

biotic control
environmental resistances
fecundity
mortality

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Environmental Science
The supersonic jets cause pollution by the thinning of

SO2 layer
O2 layer
O3 layer
CO2 layer

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MORE MCQ ON Environmental Science

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