Aplastic cube with a coin taped to its top surface is floating partially submerged in water. a student marks the level of the water on the cube, and then removes the coin and tapes it to the bottom of the cube. afterward, the student returns the cube to the water. a. above the water lineb. below the water linec. level with water line

As newton's first law states a object in motion stays in motion

The answer is water molecules are split.cellular respiration and photosynthesis are complement  reactions to each other. these are reverse reactions. in cellular respiration glucose and oxygen yield water and carbon dioxide. so, when respiration begins,  glucose molecules are split. in the opposite reaction - in photosynthesis, carbon dioxide and water yield glucose and oxygen. thus,  when respiration begins, water molecules are split.

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