I believe your answer is going to be one of thoes 4 not 109% tho u can choose one okay good
The correct answer is:
B. It is slow (he does not require many calories)
Hope this helps!
Answer:
kidney
Explanation:
Urea is carried in the bloodstream to the kidneys. The kidneys are bean-shaped organs about the size of your fists. They are near the middle of the back, just below the rib cage. The kidneys remove urea from the blood through tiny filtering units called nephrons.
Regular physical activity can improve your muscle strength and boost your endurance. Exercise delivers oxygen and nutrients to your tissues and helps your cardiovascular system work more efficiently. And when your heart and lung health improve, you have more energy to tackle daily chores.
