Define atmosphere
please in full answer

The atmosphere is the layer of gases (Which can be further identified into 6 sub-layers!) that surrounds the earth. Each individual layer of the atmosphere serves a different purpose in keeping our planet safe and healthy!

The atmosphere is made up of many gases but mainly oxygen and nitrogen. Carbon dioxide is also present (This is not a good gas!).

I hope I was of assistance! #StaySafe&SpreadTheLove <3

do yall know the answer?

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.