The most massive chemical reaction on Earth, responsible for all life in some way, is – F the carbon cycle, decomposing carbon in rich nutrients.
G photosynthesis, the use of light energy to make energy rich molecules.
H digestion, the break down of chemical energy in the gut of organisms.
J the hydrologic cycle, using water to make energy.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).