A boy with mass 25kg slides down the helical slide at a constant speed such that r=1.5m, θ=(0.4·t)rad, and z= (-1.2·t)m, where t is in seconds. Determine the components of force Fr, Fθ, and Fzwhich the slide exerts onhim at the instant t = 1s

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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.