Students treated a population of bean plants with fertilizer. They observed thats these plants, on average, were taller than another population of the
same kind of bean plants that were not treated with fertilizer. These
observations lend support to which of the following conclusions? *
O Not all plants respond to fertilizer the same way.
O Fertilizer can affect the growth of bean plants.
O Survival of bean plants is dependent on fertilizer.
O Only fertilizer can make bean plants larger.