A. it forms where a stream enters an ocean or lake, slows down and deposits sediments there over time

b. it forms when a stream overflows it’s banks and deposits sediment

c. it forms when a part of a meandering stream is cut off

d. it forms where a stream reaches a flat area of land, slows down and deposits sediments there over time

the increase of protons   hope this

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).

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