1. A
2. A
3. C
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Explanation:
Introduction. The tendency to maintain a stable, relatively constant internal environment is called homeostasis. The body maintains homeostasis for many factors in addition to temperature. For instance, the concentration of various ions in your blood must be kept steady, along with pH and the concentration of glucose.
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The answer is <span>It is the gap between neurons that ensures that information travels in one direction only.</span>
