HELP ME OUT PLZ Type the correct answer in the box. Spell the word correctly.

Which type of ecological
system experiences no input or output of energy or material?
ecosystems do not experience any new input or output of energy and/or material.

i just learnt this recently but i need to look through my notes again

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).

that's what i got you can count the number of atoms