Nitrogen - Gas to Gas

All around, but not available

The atmosphere is 78% nitrogen

Air is full of nitrogen gas

How does it go around through life?

1. atmosphere  is 78% nitrogen
2. non-reactive as N₂ gas
3. Rain washes some into the soil
4. Bacteria feed on N₂ gas
5. -binding it into the soil
6. Plants consume the soil
7. -binding it into simple molecules
8. Rumen animals, fermentive stomachs, eat the grasses
9. -binding it into proteins
10. Humans eat the proteins
11. -releasing it into tissues
12. circulates bound to carbon
13. converted to a gas
14. by white blood cells
15. -under enzymatic control
16. to kill germs
17. red cells match it to oxygen
18. to open up tight arteries to go
19. like the gas petal in your car
20. -only when there is enough fuel "in the tank"
21. so, "fill 'er up"; go long and strong