Which of the following molecules are most closely related to nucleic acids? a
sugars
b
amino acids
OOO
c
nucleotides
d
fats

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.

gag reflex, poor dentition, gum retraction

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