Please help, test question. Will give brainliest! Give the 2 sources of heat in the troposphere absorb solar energy during the day.​

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.

digestion

it excretes wastes

1) a

2)c

3)a

4)c

5)b

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