I NEED HELP WITH THIS. PLEASE BE QUICK, IM BEING TIMED!! I WILL GIVE 15 POINTS, PLEASE ANSWER TO HELP, IF NOT I WILL REPORT. Conservation of mechanical energy is defined as

A. The sum of the kinetic and potential energies of an object remains a constant value unless there are forces acting on the object that cause a loss of energy overall, such as friction and air resistance.

B. Potential energy added to kinetic energy

C. Energy of motion

D. Law of conservation of energy

a c d and f

just finished the assignment

the answer is minerals.

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).