Which of the following is the most responsible force driving the water cycle? Gravity
Elevation diffferences
Energy from the sun
Flow of water over the ground

gravity is your answer my friend

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products

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