Biological pest control is a method of managing pests using natural predators or parasites. This approach aims to reduce pest populations without relying on chemical pesticides, which can harm the environment. For example, introducing ladybugs can help control aphid populations in gardens. This technique also includes the use of nematodes, microscopic worms that target soil-dwelling pests. By promoting a balanced ecosystem, biological pest control can enhance crop health and yield. It is a sustainable alternative that supports biodiversity while effectively managing pest issues.