Across
- 3. The soil provides crops with valuable nutrients.
- 6. Many kinds of bacteria change the environment.
- 7. Do plants sprout easily in the regions?
- 9. Careful people preserve natural ressources.
- 10. Scientists control changes in the environment.
- 12. The production of clean timber takes several years.
Down
- 1. A beautiful, colorful owl walked towards us.
- 2. Can the rain forest be saved?
- 4. The office manager unlocked the door.
- 5. Growers of trees divide the forest into several sections.
- 6. Here is a book about ecology.
- 8. There are more than three dogs in the house.
- 11. A temperate climate always helps.