During science, Mr. Baxter's students were learning about the different types of soil. Mr. Baxter took the students outside where they dug around and placed some soil samples in a glass jar. After adding the soil, one student added water and shook the jar. The next day, the students noticed the soils had formed three layers. The layer of soil that had light colored grains settled on the bottom. This lower. light colored layer was MOST LIKELY