Answer:
Air is composed of 78 percent nitrogen
Explanation:
Answer:
<h2>❤</h2>
Explanation:
<h3>cried the most is my weakness thing every night:(</h3>
Are you referring to calcium carbonate?
<span>Is this what you were looking for?
Peristalsis the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wavelike movements that push the contents of the canal forward.</span>