Rock and soil play an important role in nature and human society. Rock is one of the main components of the earth's crust, and it is also an important material for human buildings, roads, bridges and other infrastructure. Rocks can also be used to make industrial raw materials such as steel and chemicals, as well as for carving, decoration and religious ceremonies. Soil is the foundation of plant growth, which provides water, nutrients and mechanical support for plant growth. Soil can also be used in agricultural production, forestry, animal husbandry and other fields, and is an important source of food, fiber and energy for human beings. In addition, soil has hydrological and ecological functions, which can filter, store water and mitigate the impact of natural disasters.