Across
- 1. an electrical discharge caused by imbalances
- 4. a type of plant such as a pea or bean
- 5. any material that is applied to soil or to plant tissues to supply one or more plant nutrients essential to the growth of plants
- 10. an intermediate product of the oxidation of ammonia to nitrate
- 11. the biological oxidation of ammonia to nitrite
Down
- 2. a compound that is formed naturally when nitrogen combines with oxygen or ozone
- 3. the state or process of rotting
- 5. process of converting atmospheric nitrogen to another form of nitrogen
- 6. a type of biological cell
- 7. a colorless gas composed of hydrogen and nitrogen
- 8. a macronutrient that is essential to building muscle mass
- 9. the part of a vascular plant that is normally underground