2. Underline the correct word. 1. Zoos play an important role/ cycle in animal conservation. 2. Cars burn/ emit petrol.

Underline the correct word.

    1. Zoos play an important role/ cycle in animal conservation. — Zoos play an important role in animal conservation.

1. Cars burn/ emit petrol. — Cars burn petrol.
2. Animals should live in their natural ecology/ habitat. — Animals should live in their natural habitat.
3. Acid rain causes/ poisons trees and plant.— Acid rain poisons trees and plant.
4. He made off/up the whole story. — He made up the whole story.