Topsoil is the uppermost layer of soil, typically rich in organic matter and nutrients. It is crucial for plant growth, as it provides essential minerals and supports a diverse ecosystem of microorganisms. This layer is usually darker in color compared to the layers beneath it, due to the presence of decomposed organic material. Topsoil is formed through the weathering of rocks and the decay of plant and animal matter over time. It can vary in thickness and composition depending on the location and environmental conditions. Healthy topsoil is vital for agriculture, gardening, and maintaining natural habitats.