Choose all the answers that apply. The ionosphere .

is used to send radio waves
blocks harmful x-rays
is warmed by the ozonosphere
includes all the layers after the mesosphere
contains charge atoms

This layer of the atmosphere is a layer of charged particles and it helps carry radio waves. The auroras or Northern lights are caused by the collision of energetic charged particles with atoms in the ionosphere.

Explanation:

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.