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Author Question: Explain the relationship between the heat released by the chemical reaction and the change in ... (Read 81 times) |
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
The human body produces and destroys 15 million blood cells every second.
Green tea is able to stop the scent of garlic or onion from causing bad breath.
Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.