Define leaching?

Leaching is a process in which a substance is removed or extracted from a solid material by dissolving it in a liquid. This can occur naturally through the action of water or other solvents, or it can be a deliberate process used in various industries such as mining, agriculture, and environmental remediation.

Leaching is the process of extracting soluble constituents from a solid material by the continuous passage of a liquid through it. In the context of soil science, leaching refers to the downward movement of water through the soil profile, which carries dissolved nutrients and other substances with it. This process can result in the loss of nutrients from the soil, particularly in areas with high rainfall or irrigation. Leaching can also occur as a result of industrial or agricultural activities, where chemicals and other contaminants can be released into the environment and leach into the soil.