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If john has 100 family members 50%of them have been a car accident. 30% have had cancer how many of them are healthy

*edit* i took the test and i picked a and it was incorrect for its c! rank the following suggestions for preventing std, in order of increasing effectiveness. 1) using latex condoms properly 2) using spermicidal foam or jelly with a monogamous partner 3) abstaining from sexual intercourse and genital contact a. 1, 2, 3c. 2, 1, 3

Amino acids are important to the body because they build carbohydrates proteins complex carbohydrates simple sugars fats