Across
- 2. to support or uphold something
- 4. the use of living micro-organisms
- 5. a substance for killing plants
- 7. the variety of plant and animal life
- 8. to produce as a natural product or profit
- 9. the process of growing or developing things
Down
- 1. a method of farming
- 3. a substance for killing insects
- 6. a substance for killing harmful insects and other pests