Across
- 4. The planting of trees in making more oxygen available for living things
- 5. Dioxide Plants use it and water in the photosynthetic process
- 6. Farming that utilizies no artifical resources in maintaining crops
- 7. Is given off as a byproduct of photosynthesis
- 9. rotation Planting different crops at different intervals in order to rotate the nutrients available
Down
- 1. The planting of a single crop
- 2. Using water along with soluble fertilizer to grow crops
- 3. The cutting down of trees for building purposes
- 8. Is used to abosrb sunlight in the photosynthesis process