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James took two pea plants one in a dark closet and the other in a sunny window sill. Both are located in air conditioned rooms.He then measured the growth of the pea plants after a week in Thea experiment,sunlight is a(n)

James took two pea plants one in a dark closet and the other in a sunny window sill Both are located in air conditioned roomsHe then measured the growth of the class=