Nutrient cycling is the process through which essential nutrients, like nitrogen, phosphorus, and potassium, move through the environment. These nutrients are found in soil, water, and living organisms. When plants absorb these nutrients, they grow and provide food for animals. When plants and animals die, their bodies decompose, returning nutrients back to the soil, which helps new plants grow. This cycle is crucial for maintaining healthy ecosystems. For example, decomposers like bacteria and fungi play a vital role in breaking down organic matter. By recycling nutrients, they ensure that the soil remains fertile, supporting diverse life forms and promoting a balanced environment.