Question

IV. Give reasons for the following:
1. Extrusive igneous rocks generally have small crystals.​

Answer 1

Answer:

tell me a chapter name

Explanation:

then then only can I tell

Answer 2

Answer:

Answer: Extrusive igneous rocks come from lava. Lava, at the surface, is exposed to air and water which causes the molten rock to cool rapidly. ... Extrusive rocks generally have small crystals because in the formation of these rocks, the solidification of magma takes place at a slower rate.