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Author Question: Facebook chat is a form of email messaging. Indicate whether the statement is true or ... (Read 73 times) |
Illicit drug use costs the United States approximately $181 billion every year.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
The average adult has about 21 square feet of skin.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).