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Irene.
- 3. If we use our car all the time, we will pollute the air.
- 4. If we stop polluting the air, we will be healthier.
- 6. If we go on foot, we won't pollute the air.
- 9. If we have a bath, we will waste a lot of water. We should have showers.
- 10. If we leave tap on while we are brushing our teeth, we will use lots of water.
- 11. If we turn off the computer when we don't use it, we will save energy.
- 12. If we write on both sides of the paper, we will save trees.
- 13. If we throw our rubbish on the floor, we will pollute the planet.
- 14. We won't have any water to drink, if people don't keep it clean.
- 15. If we destroy now our planet, the following generations won't see how beautiful it is.