Students planted the same type and number of seeds in pots a and b. the amount and type of soil in both pots were also the same. each plant received the same amount of water each week. pot a was placed by a sunny window. pot b was placed in a closet. after four weeks, the students observed the plants in both pots. the plants in pot a were green with thick stems. the plants in pot b were yellow with thin stems. which statement best explains why the plants in pot a were different from the plants in pot b?