Across
- 2. Something discharged into the air (8)
- 3. ____ accumulation can be a problem for irrigated land. (4)
- 7. An aging process in lakes with excess nutrients (14)
- 9. Water found below the ground surface (11)
- 11. Greenhouse gas belched by cows (7)
- 12. A cud-chewing animal (8)
- 13. Using land for agriculture and forestry (12)
Down
- 1. Environmental contamination caused by a harmful or poisonous substance (9)
- 4. A nitrogen-fixing crop (7)
- 5. The "I" in IPM (10)
- 6. No-____ planting protects soil from topsoil losses. (4)
- 8. Blue baby syndrome is caused by high ____ levels. (7)
- 10. Most likely to occur in dry years with feed shortages (11)