Chronic hepatitis is usually caused by contaminated needles due to drug use or sexually transmitted disease. Acute hepatitis is usually caused by the hepatitis A infection due to poor living conditions.
Salt water is denser than cold water because fresh water sinks when it is in salt water.
<span>Stratum Basale, being the deepest stratum of skin, will be supplied with the highest levels of oxygen from the blood. The Stratum Basale is constantly renewing and must be supplied with oxygen in order to keep renewing. The other stratus are more superficial and further from the blood source and also do not require quite as much oxygen.</span>