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12.Ecosystem
normal
More than half of the earth’s flora and fauna is found in
A
Tropical rain forests
B
Montane temperate forests
C
Deciduous forests
D
Alpine forests
Solution
(a)Diversity of life is so high that a hectare of the forest may have as many as $200 $ species of trees, $70-80\%$ of all insects and $80-85\%$ of all birds are known from tropical forests
Standard 12
Biology
