Across
- 4. A large, uncontrolled fire in a forest
- 6. To send out energy, like heat from the sun
- 7. To make soil, water, or air dirty with poison or waste
Down
- 1. Water vapour released from plant leaves into the air
- 2. To cut down or burn all trees in a large area
- 3. To move around in a cycle, like water or air in nature
- 5. When water turns into vapour(蒸气) from lakes and leaves