Across
- 3. chemicals Chemicals created by humans, not found naturally
- 5. Poisonous substances
- 6. farming Growing food without using artificial chemicals
- 7. Substances added to soil to help plants grow
- 9. Substances that may cause cancer
Down
- 1. dioxide emissions Gas released from cars, factories, or animals
- 2. Chemicals used to kill insects on crops
- 4. benefits Positive effects on nature
- 8. quality How healthy and rich the soil is for plants
- 10. rotation Growing different crops in the same field each year