1. I am partnered with chlorophyll
2. By adding eggshells, you are able to add more of me to the soil
3. I can be sprayed on plant leaves
4. Muck and peat soils add me to the soil
5. I am involved with the opening and closing of the stomata
6. You can spray kelp on plants when you need me
7. I am an indicator if the pH is high or low in soil
8. Decaying plants add me to the soil
9. When I am mixed with peroxide, I can kill fungi
10. I am responsible for cellular respiration
11. Chlorophyll is mostly made up of me
12. Compost will add me to the soil
13. Manure helps add me back into the soil
14. I am important for healthy roots
15. Add bone meal fertilizers to put me in the soil
16. I am used to lower pH
A. Nitrogen
B. Zinc
C. Chlorine
D. Iron
E. Calcium
F. Nitrogen
G. Magnesium
H. Phosphorus
I. Manganese
J. Phosphorus
K. Oxygen
L. Boron
M. Carbon
N. Hydrogen
O. Copper
P. Sulfur