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.

Tick the correct answer.(i) Which is not a natural ecosystem?(a) Deser

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