Two neurons communicate with each other through the. The is released at the site to initiate action potential and carry the signal through the body.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )