The adult human brain contains almost 97% of the body's neural tissue.
Heat stroke is the most serious heat-related illness. It occurs when the body becomes unable to control its temperature: the body's temperature rises rapidly, the sweating mechanism fails, and the body is unable to cool down. Body temperature may rise to 106°F or higher within 10 to 15 minutes.
<span>The common cold, the flu, food poisoning, and toothaches all stem from pathogens. Pathogens are infectious agent that causes disease or illness to its host. The term is often used for agents that disrupt the normal physiology of a multicellular plant or animal, like the human.</span>
