What do cocaine, amphetamines, caffeine, nicotine, and MDMA (ecstasy) all have in common? Select one:

a.
They all increase the activity of the nervous system.

b.
They all cause hallucinations.

c.
They are all taken by people who want to relax or go to sleep.

d.
They are all very highly addictive both physically and psychologically.

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).