7. ______ When something "happens overnight," it means that it occurs quickly. (A) True (B) False

17. _______ Which of the following is a theory, not a fact? (A) The Paleolithic period refers to a period of time that began about 2.6 million years ago. (B) Cordain is a nutritionist who studied the diets of hunter-gatherers who are alive today. (C) A diet similar to what people ate in the Stone Age can prevent many medical problems. (D) The Hadza people of Tanzania get almost 70 percent of their calories from plants.

7. ______ When something "happens overnight," it means that it occurs quickly.
(A) True
(B) False

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