HELP THIS IS SCIENCE: what is difference between the pupil and the iris?

Pupil is the blackness in the middle, which is technically a "hole" in your eye which light goes through. The iris is the part that has color.

Explanation:

When someone asks you "what color are your eyes," they really mean "what color are your irises"

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).