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.
<span>Hi
HIV weakens the immune system. At a late stage, so it makes the body vulnerable to infections. It is transmitted sexually or through blood, or the pregnant woman to her child.
HIV is different from other viruses because it attacks the immune system, which normally role combat<span>.</span></span>
There are several factors including but not limited to proper diet including healthy food choices and the right amount of calories to maintain loose or gain weight. eight glasses of water per day. plenty of sleep. exercise three times per week. healthy attitude and emotional stability
The answer is D, tuberculosis.
Asthma is caused by inflammation of the airways, allergies are caused by an immunoreaction to a substance, and the flu is a viral infection.
