Difussion occurs from a high concentrated region to a low concentrated region. The velocity of diffussion is proportional to the differential of concentrations. In the lung arrives blood with low levels of oxygen while the long is rich with fresh oxygen so the oxygen flows from the lung tissues to the blood.
The other tissues consume oxygen continually them they get poor in oxygen and so the oxygen that is in the blood diffuses to the tissue that is poor in oxygen.
Well no-one really know's but my perception of life is all a big lesson for what will be in the afterlife.
Supplements are the most common cause of vitamin A toxicity. Vitamin a toxicity tends to not occur from eating vitamin a rich foods
Answer:
urine might leak out of the bladder
Explanation:
