More than half of the earth’s flora and fauna is found in
Tropical rain forests
Montane temperate forests
Deciduous forests
Alpine forests
Human activities interfere with carbon cycle. List any two such activities.
For recycling of materials which one is most necessary
The agent/s which make/s free atmospheric nitrogen available to plants is/are
$A$ : Niche become general and broader during biotic succession.
$R$ : Species diversity increases but organic matter is decreased.