Mr. Mac had his students conduct an experiment on ecological succession. He built a large 20-foot by 20-foot wooden box in the school yard and had his students fill it with fresh sand and rocks. He then had his students record weekly data on what was growing in the microhabitat over a twelve month period.If Mr. Mac's students came back to visit the school twenty-five years later, and their microhabitat were left undisturbed, what would they most likely observe? A.The microhabitat would be barren because it did not occur naturally. B.The microhabitat would contain only a variety of grasses. C.The microhabitat would be overgrown by a large variety of bushes and trees. D.The microhabitat would contain many varieties of pioneer species.