More than half of the earth’s flora and fauna is found in
Tropical rain forests
Montane temperate forests
Deciduous forests
Alpine forests
Under what conditions would a particular stage in the process of succession revert back to an earlier stage ?
A farmer harvests his crop and expresses his harvest in three different ways.
$(a)$ I have harvested $10$ quintals of wheat.
$(b)$ I have harvested $10$ quintals of wheat today in one acre of land.
$(c)$ I have harvested $10$ quintals of wheat in one acre of land, 6 months after sowing.
Do the above statements mean one and the same thing. If your answer is yes, give reasons. And if your answer is ‘no’ explain the meaning of each expression.
Vertical distribution of different species occupying different levels in a biotic community is known as
According to Robert Constanza average price tag for ecosystem services is
Which of the following ecosystem types has the highest annual net primary productivity?