Soil is considered nonrenewable because after erosion it is lost and not renewable.

• A. It is renewable
• B. It is nonrenewable
• C. It is endless
• D. It regenerates quickly

Answer: (B)

Soil is considered nonrenewable because its formation happens extremely slowly, while erosion can remove the surface soil much faster. The fertile top layer develops over long periods through weathering of rocks and accumulation of organic matter, often millimeters to centimeters per century. When erosion carries that topsoil away, it’s lost from the site and can take many generations to be replaced at any meaningful rate. So, on human timescales, soil cannot be renewed quickly enough to keep pace with its loss. That’s why the statement is true: soil is nonrenewable. Saying it’s renewable, endless, or that it regenerates quickly contradicts how slowly soils form compared with how fast they are eroded, and thus doesn’t fit real-world soil behavior.