Which of the following processes will not lead to the loss of nutrients from the soil?

Mulching is a process that involves covering the soil with organic matter, such as leaves or straw, to protect it from erosion, retain moisture, and regulate soil temperature. This process helps to build up soil organic matter and nutrients, rather than depleting them. Therefore, mulching will not lead to the loss of nutrients from the soil. On the other hand, erosion, harvesting, and leaching can lead to the loss of nutrients from the soil. Erosion can cause topsoil to wash away, taking with it valuable nutrients. Harvesting removes nutrients that have been stored in crops, while leaching occurs when water carries nutrients deep into the soil or beyond the root zone, making them unavailable to plants.