Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.
<span>c. co2 and h2o are converted to carbohydrates
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Answer:
b
Explanation:
because an object is in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
Answer:
The average adult, when resting, inhales and exhales about 7 or 8 liters of air per minute. That totals about 11,000 liters of air per day. Inhaled air is about 20-percent oxygen. Exhaled air is about 15-percent oxygen.
Explanation:
