Class 10 Biology MCQs – Practice Test 17 (Chapter 7)

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Man and Environment MCQs – Practice Test 17 PDF Download

MCQ 81: Nitrogen fixation is the conversion of nitrogen gas to:

nitrates
nitrites
nitric acid
nitric oxide

MCQ 82: The organisms who kills, attacks and feeds others are called:

prey
predators
assimilators
competitors

MCQ 83: The excess burning of fossil fuels leads to increased carbon dioxide which results in:

greenhouse effect only
global warming only
acidic rain
green house effect and global warming

MCQ 84: The ecological pyramid concept was proposed by Charles Elton in:

1927
1930
1935
1938

MCQ 85: The ultraviolet rays in the radiations of the sun are absorbed by:

troposphere
thermosphere
stratosphere
ozone

Class 10 Biology MCQs App & e-Book – Man and Environment Study Guide

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