Exercise 3.3: Question plan for retelling.

1. Cars, factories and power stations burn petrol and coal.
2. Factories emit toxic fumes.
3. Pollution gathers in clouds and mixes with oxygen and water.
4. Polluted clouds travel long distances.
5. Acid rain lands everywhere, on trees, buildings, and cars.
6. Acid rain harms fish, plants, trees, and damages buildings.
7. Governments are trying to reduce air pollution.
8. We can help by using our cars less and by using solar power.