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Author Question: Secondary rainbows occur when ____. a. two internal reflections of light occur in raindrops. b. ... (Read 209 times) |
There are 20 feet of blood vessels in each square inch of human skin.
There are more bacteria in your mouth than there are people in the world.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.
More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.