Across
- 5. A relation where one organism benefits while the other organism doesn't mind
- 9. A system that grows plants and raises fish
- 10. The natural world around us is called the ___________
- 11. A relations where one organism has benefits and the other organism is suffering
- 13. A group of chemicals needed for plants to grow
- 15. A variety of living things that interact
Down
- 1. Chemicals that are added to the soil
- 2. Requires regular checks on the _____ quality
- 3. The process of which plants and living organisms use light to grow
- 4. A system that used wick as a absorbent material
- 6. A relation where two organism benefit from each other
- 7. The practice of farming is called _________
- 8. The process of excess nutrients that runoff into water ways
- 12. A system where plants are suspended in the air
- 14. A fibre that absorbs nutrients is called a ______ system used in hydroponics