What process do human cells undergo to get the energy they need?
evaporation

cellular respiration
Ophotosynthesis
cellular nitrogenation

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explanation:

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.

the tricuspid valve is present between right atrium and right ventricle

gag reflex, poor dentition, gum retraction

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