Answer:
little pouches
Explanation:
the aleveoli are like small balloons, but not large ones. they exchange oxygen and carbon dioxide molecules (so they contain small amounts of air like a SMALL balloon, or in this situation a small pouch).
oye no me lo de baja enviar y me tocó tomarle pantallazo de lo que estaba escribiendo y espero te ayude
The correct answer of the given question above would be PROTEIN. The macromolecule that is involved in nearly every function in the human body is the protein. I<span>f there is a shortage of carbohydrates or lipids, proteins can serve as an energy source. It is also essential in building muscle mass. Hope this answer helps.</span>