the human body has about 206/207 bones. and the human brain has about 100 billion braincells.
When a person is dehydrated, you can notice a drop in their breathing rate, their stamina, urination decreases, they become less aware, and their overall energy level decreases.
The answer would be A (Endocrine-Nervous)
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Answer:
The number of heartbeats per unit of time, usually per minute. The heart rate is based on the number of contractions of the ventricles (the lower chambers of the heart). The heart rate may be too fast (tachycardia) or too slow (bradycardia).
Explanation: