A rock with a porphyritic texture has large crystals “floating” in small crystals. Describe what made it form this way.

Summary. Intrusive igneous rocks cool from magma slowly because they are buried beneath the surface, so they have large crystals. Extrusive igneous rocks cool from lava rapidly because they form at the surface, so they have small crystals. Texture reflects how an igneous rock formed.

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Explanation:

answer; (b); i believe its indefinite existence of human population in a healthy and prosperous condition;

tunami b/c it is near water