- Grade 11 and 12 Mathematics (Moderator: geoffrey)
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Author Question: Answer true or false. A spanning tree contains one and only one circuit. (Read 694 times) |
- Grade 11 and 12 Mathematics (Moderator: geoffrey)
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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.
In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
Cyanide works by making the human body unable to use oxygen.