Question

Tick the correct answer.
(i) Which is not a natural ecosystem?
(a) Desert
(b) Aquarium
(c) Forest.
(ii) Which is not a component of human environment?
(a) Land
(b) Religion
(c) Community.
(iii) Which is a human made environment?
(a) Mountain
(b) Sea
(c) Road.
(iv) Which is a threat to environment?
(a) Growing plant (b) Growing population
(c) Growing crops.

Answer 1

(i)—(b), (ii)—(a), (iii)—(c), (iv)—(b).