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Author Question: List four classes of fire extinguishers. For each one, describe its designating symbol, and identify ... (Read 67 times) |
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.
The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.