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  1. It rises because of the effervescent tablet which releases gas (probably CO2) as it disolves. The gas rises and pulls some dye with it.

  2. The bubbles produce the same cyclical current as the light bulb in a lava lamp, only it’s through physical displacement instead of convection.

  3. This is actually an antigravity pill, making water lighter than oil allowing it to rise to the top

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