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?
a) pot a contained more soil than pot b.
b) pot a contained more seeds than pot b.
c) pot a received more sunlight than pot b.
d) pot a received more water than pot b.
eliminate

Juan and carol were studying invertebrates in biology. they knew that segmented or earth worms preferred a dark, moist habitat. during this lab, they would be investigating the responses of organisms called planaria or dugesia tigrina. these were simple flatworms that still had a one-way digestive system and a very simple nervous system. juan and carol placed the planaria in a petri dish containing cool, distilled water that was partially covered with black paper. they shined a light on the dish. next, they removed the paper and placed a small amount of chicken liver at one end of the dish. they added a few large salt crystals to the water. finally, they added drops of hot water to the cool water in the petri dish. their results can be seen in the data table. according to their experiment, all but one conclusion is valid.