Unit 3 - Lesson 2: 11

11. Solve the environment crossword.

Across:4. To process used objects so that they can be used again.5. Lots of trees form it.8. The problem of the rise in temperature of the Earth's atmosphere is called global...9. A mixture of smoke and fog.10. The rain that falls from cloudsand contains harmful chemicals.

Down:

1. To make air, rivers, etc. dirty.

2. To damage something so badly that it no longer exists.

3. Weather conditions of a particular place.

6. This layer protects the Earth from dangerous rays of the sun.

7. Gas which is sent out into the air.