• 2022-05-29
    Heart disease is the number-one killer in the United States. Cigarette smoking is a significant factor contributing to heart disease. Having a high cholesterol count and being overweight are two other likely causes of heat disease. A family history of heart disease and a lack of exercise are still other factors that contribute to heart conditions.
    A: Definition
    B: Classification
    C: Cause and effect
    D: Time sequence