Because each body system has a completely different function.
The answer you are looking for is D
Answer:
yogurt, b, is the answer.
Answer:
Taking this as indicative of baseline levels, step-based translations of public health recommendations suggest that US adults should be taking 8,900 to 9,900 steps/day on 5 days of the week for example, at least 3,000 of which should meet moderate intensity and bout requirements.
Explanation:
