Which is an example of an effect caused by Earth's magnetism?

A. Earth's magnetic field causes earthquakes.

B. Earth's magnetic poles repel the continents.

C. Earth's magnetic field causes volcanic eruptions.

D. Earth's magnetic poles attract the poles of a compass needle.

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).