The earth's atmosphere is divided into five layers. in which layer does all life exist?

Explanation:

The atmosphere is divided into five layers. It is thickest near the surface and thins out with height until it eventually merges with space. 1) The troposphere is the first layer above the surface and contains 70 to 80 per cent of the Earth's atmosphere. Weather occurs in this layer.

hello there,

igneous rock formed from below the surface would have more crystals because

answer: because magma cools more slowly than lava