The first answer because it lets his father know he is worried about him
<span>The question is asking why the same exercise program might conform to the principle of overload for one person but not for another?. Another, simpler way of asking this is : do exercise programs have the same effects on different people? Do different people need to pay attention to different conditions? The answer is: yes, and that's because different people have different levels of physical fitness at the beginning of the regine, so some people might be able to endure harsher exercise than others.</span><span />
Answer:
1. The urinary system cleans the blood in the circulatory system. Blood traveling back to the heart passes through the kidneys in the urinary system. The kidneys clean the blood and control the amount of salt, water, and other substances in the blood.
2&3.The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and bronchioles. Blood moves in and out of the lungs through the pulmonary arteries and veins that connect to the heart.
4.The point is, without the respiratory system your blood would be useless. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body.
Explanation:
