From 1981 to 2009, the Number of Reported Cases of AIDS

question 71

Multiple Choice

From 1981 to 2009, the number of reported cases of AIDS in the U.S. was

• A)988,376.
• B)1,142,714.
• C)617,025.
• D)1,902,997.

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Definitions:

HAc

Acetic acid, a colorless liquid organic compound with the chemical formula CH3COOH, known for its sour taste and pungent smell.

K

The symbol for potassium, a chemical element with atomic number 19, essential for plant growth and functioning of the nervous system in animals.

pH

A measurement system that determines whether an aqueous solution is acidic or basic, scaling from 0 (highly acidic) to 14 (highly basic).

K

Potassium, a chemical element with symbol K, essential for living organisms and used in numerous industrial processes.