An exothermic reaction causes the surroundings to a. warm up. b. become acidic. c. expand. d. decrease its temperature. e. release co2

A. warm up.

Explanation:

An exothermic reaction is a chemical reaction that releases energy through light or heat.

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).