Living in spaces between individual sand grains in the soil or aquatic sediments.
To be honest, I'm not that sure on which one it is, but given choices lead me to think is the nervous system, probably because that's the reason our bodies are functioning, and compared to all other systems, the brain and the nervous system are needed for survival, otherwise you wouldn't be living.
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Was this for a different problem that you were trying to solve?
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Answer:
In general, children and teens need about 6 to 8 cups of water a day. They should also eat lots of fresh fruits and veggies, which are full of water. During play or exercise, a good goal is to drink a half cup to 2 cups of water every 15 to 20 minutes.
Explanation:
