Interactions between soils and natural environmental cycles?

Question

Interactions between soils and natural environmental cycles?

Answer 1

1) Gaseous exchanges (nitrogen fixation, oxygen, CO2, etc)

2) Organic exchanges (decomposition of organic materials form a proportion of soil composition)

3) Physical exchanges (water cycles, erosion, freeze/thaw of soils etc)

4) Atmospheric cycles (wind, climate, etc)

Answer 2

Roting plant material is acid.

Earth is generally basic.

Mother nature mixes these together to a salt. That is why all oceans are salty.