Explain why this happens: "If you put your hand in a beaker of water and decided to open & close your fist, the water level in the beaker should rise as you sent those fluid signals to your hands."
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2. Explain why this happens: "If you put your hand in a beaker of water and
decided to open & close your fist, the water level in the beaker should rise as you
sent those fluid signals to your hands." (paragraph 1, page 3) *