We have all heard that dietary fats are linked to higher incidences of heart disease and cancer in humans. Choose the proper hypothesis that a scientist can test.
A. Fat levels above 30% of calories in the diet are correlated with an increase in heart disease.
B. Dietary fat, heart disease, and cancer are all somehow interrelated.
C. Eating a diet of lard makes you fat.
D. Eating more meat causes cancer.
Answer: A
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How much air enters the lungs of an average-sized adult when breathing normally?
A) 750 milliliters B) 1,000 milliliters C) 275 milliliters D) 125 milliliters E) 500 milliliters
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