Hydroponics

3. Dead plant material that has decomposed in the absence of air in peat bogs over many years.
5. Manufactured by melting basalt rock
10. A fine mist of nutrient solution sprayed over roots every few minutes.
11. Made by heating clay to a very high temperature, making it sterile.
12. Grow tray with growing medium instead of channels.
13. Housing with stacked shelves
15. Roots submerged in nutrient solution.

1. Wide plastic channels with holes where seedlings are suspended.
2. Naturally occurring silicate that expands when heated
4. ___________ systems use water instead of soil to produce plants.
6. Nutrient solution transported from reservoir is dripped onto individual plants.
7. Design to absorb and trap solar heat; greenhouse made of glass.
8. Mineral that has been superheated in a kiln until it expands like popcorn
9. Outer husk of coconut.
14. Nutrient Solution is transported to plants via capillary action.