DeShawn is studying homeostasis and circulation. To organize his findings, he constructs two models of the human heart, veins, and arteries: one to represent a non-smoker, and one that includes attributes typically found in a smoker. By comparing the two models, which relationship of cause and effect can DeShawn best explain?
A. Contractions of the heart move blood through the circulatory system.
B. Smoking causes changes to homeostasis throughout the body.
C. Smoking damages the function of the circulatory system.
D. Blood flows in one direction only through the circulatory system.
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DeShawn is studying homeostasis and circulation. To organize his findings, he constructs two models...
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