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Author Question: Which of the following is an example of a social convention? (Read 387 times) |
A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.
During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
Your heart beats over 36 million times a year.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The familiar sounds of your heart are made by the heart's valves as they open and close.