Biogeochemical puzzle

2. The chemical element of atomic number 8, a molecule of two atoms which is a colorless gas at normal temperatures and pressures.
4. A colorless, odorless, highly flammable gas, The chemical element of atomic number 1.
6. A chemical reaction during which monomers (small molecules) join to form polymers (large molecules or macromolecules).
7. The chemical element of atomic number 6, a non metal which has two main forms.
9. The chemical element of atomic number 15, a poisonous, combustible non metal which exists in two common allotropic forms.
12. The process behind the condensation of water vapor in the atmosphere that falls down under the influence of gravity.

1. Cycle A biogeochemical process through which nitrogen is converted into many forms.
3. The chemical element of atomic number 7, a colorless, odorless unreactive gas that forms about 78 percent of the earth's atmosphere.
5. The process that changes liquid water to gaseous water (water vapor).
8. Cycle The continuous movement of water within Earth and atmosphere.
10. The conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage.
11. Cycle Nature's way of reusing carbon atoms, which travel from the atmosphere into organisms in the Earth and then back into the atmosphere over and over again.