Answer:
The brain's signals.
Explanation:
The brain sends signals to the muscles to contract and release. Without the brain the muscles would not be controlled and you would not be able to use them for anything that you want to.
The 1st law of thermodynamics doesn't specify that matter can be created nor destroyed, but that the total amount of energy in a closed system cannot be created nor destroyed though it can be changed from one form to another.
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Atoms (Sodium and Fluorine)
Answer:
No.
Explanation:
No organism can detect X-rays or radio waves
