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Subjects
Science CBSE
Class 9
Natural resources
Textbook questions
27.
NCERT Exemplar IX
Exercise condition:
3
m.
1
.
Growth of Lichens on barren rocks is followed by the growth of
moss
gymnosperms
algae
ferns
2
.
Marked temperature changes in aquatic environment can affect
breeding of animals
process of digestion in animals
availability of nutrients
more growth of aquatic plants
3.
Low visibility during cold weather is due to
formation of fossil fuel
unburnt carbon particles or hydrocarbons suspended in air
lack of adequate power supply
None of these
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