|
Author Question: To decrease air pollution created from sulfur emissions, your local power plant wishes to build tall ... (Read 556 times) |
Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.