Answer:
Hypotonic
Explanation:
Water moves via osmosis down the concentration gradient from an area of lower solute concentration (the surrundings) to an area of higher solute concentration ( the cell).
Because the heart has a very important task for the body, it follows a cycle called the cardiac cycle. The intervening pauses allows the blood to be emptied out completely from the atria and transferred to the ventricles before the ventricles finally pumps out the blood.
B. Exchanged during normal breathing
The answer is C. I hope I helped you. If you have any other questions labour biology a good source is quizlet.
