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Author Question: Tornadoes contain extreme pressure gradients. They are thought to be on the order of ________ ... (Read 27 times) |
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.