How can we help with global warming? Cover the opposite page and complete the text.

1. Don’t ¹ throw away paper, glass and plastic; ² it.
2. Don’t ³ water: turn off the ⁴ when you brush your teeth.
3. ⁵ energy by ⁶ off lights when you leave a room.
4. ⁷ trees in order to ⁸ the amount of carbon dioxide.
5. ⁹ action now, before it’s too late.