A. the signal travels through the nerve of the hand to the spinal cord and then to the brain
There are several systems in the body that get rid of cellular waste.
1. The urinary system removes urea from the body.
2. The spleen removes aged and damaged blood cells from the blood stream and breaks them down. The liver then removes the hemaglobin and breaks it down further. Some of the by products are excreted with the bile (ie heme) and some are released back to the blood stream to be removed by the kidneys (urea).
3. Some cellular waste is transported by the blood to the lungs where it is released through exhalation. (ie carbon dioxide)
<span>4. Some cellular waste is removed from the body through perspiration.
</span>Lysosomes have powerful enzymes and acids to digest and recycle cell<span> materials. Proteins aren't the only type of </span>cellular waste<span>. </span>Cells<span> also have to recycle compartments called organelles when they become old and worn out. For this task, they rely on an organelle called the lysosome, which works like a </span>cellular<span>stomach.</span>
In adulthood, approximately 8% of the fat cells die yearly, they are then replace by new ones. The result of this is that adults develop a constant number of fat cells, this applies to those who gain more weight and those who lose masses of weight. What causes the body weight to rise and fall is the volume of fat cells.
Answer:B
Reason:it is balanced
