The focus for this chapter is soil, and the activities investigate the general soil characteristics of color, structure, and texture. Students learn that an examination of the soil can tell much about the area under investigation. Learning about soil and soil composition is an essential part of environmental science education and connects the land-water and land-air interface in a number of significant ways. By learning about important aspects of soil and its significance in the environment, a better understanding of watersheds, nutrient cycles, water quality, and overall quality of the system can be attained.