22. To test whether a plant grows better in acidic or basic soil, the amount of water and sunlight the plants receive must be controlled as
factors called what?

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Explanation:

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an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme