The Red Data Book keeps a record of all the

(i) endemic species.

(ii) extinct species.

(iii) endangered plants.

(iv) endangered animals.

Which statement is incorrect about endangered species?

What do black buck, elephant, python and golden cat together represent in a forest?

Migratory birds fly to far away areas during a particular time of a year. Which of the following conditions present in their habitat during that time are responsible for this behaviour?

(i) Unavailability of food.

(ii) Extreme weather conditions.

(iii) Over crowding.

(iv) Lack of nesting areas.

In our country, large patches of forests are being cleared for cultivation of crops. The environmental impact of such a practice will lead to