Adecimeter (dm) is one tenth of a meter. the diameter of earth is 1.3 x 104 km. what is the diameter expressed in decimeters? 1.3 × 107 dm 1.3 × 1011 dm 1.3 × 108 dm 1.3 × 10–5 dm

6.4 cm (max) - 25 cm (min)

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).