Complete the sentence about the crystallization of magma. The rate at which magma
———— determines the
of the ———— crystals in the new rock.

Cools

Size

Explanation:

The rate at which magma cools determines the size of the crystals in the new rock.

When magma cools rapidly, nucleation centers are much and they do not aggregate to form larger crystals. This will give a rock that is finely grained.

When magma cools slowly, the nucleation centers grows and much time is afforded for big crystals to form within the mass.

Most intrusive igneous rocks usually have big crystals because the crystals have enough time to aggregate around nucleation centers. Extrusive igneous rocks cools rapidly and their crystals are very fine grained due to the condition prevalent on the surface.

The investiture controversy began as a power struggle between pope gregory vii (1072–85) and henry iv, holy roman emperor (1056–1106).[2] a brief but significant struggle over investiture also occurred between henry i of england and pope paschal ii in the years 1103 to 1107, and the issue played a minor role in the struggles between church and state in france, as well.by undercutting the imperial power established by the salian emperors, the controversy led to nearly 50 years of civil war in germany, and the triumph of the great dukes and abbots. imperial power was finally re-established under the hohenstaufen dynasty. historian norman cantor:

Answer (d) may increase or decrease porosity through dissolution or deposition;