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Author Question: An organic substance contains the elements carbon and hydrogen. Indicate whether the statement is ... (Read 20 times) |
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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.
Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.