Compost - GCSE Biology Definition

Compost is a natural material made from the breakdown of organic matter, like food scraps, leaves, and grass. It happens when microorganisms, such as bacteria and fungi, decompose this waste in a process called composting. Composting turns waste into a nutrient-rich substance that looks like soil and is often called "black gold" by gardeners. This is because it improves soil quality and helps plants to grow better by providing them with essential nutrients. In GCSE Biology, students learn about composting as an example of how nutrients are recycled in ecosystems and how humans can manage waste more sustainably.