An ekosistem is a community of living organisms, such as plants, animals, and microorganisms, interacting with their physical environment. This includes elements like soil, water, and air. Each organism plays a specific role, contributing to the balance and health of the ecosystem. Ecosystems can vary in size and type, ranging from small ponds to vast forests or deserts. They are essential for maintaining biodiversity and providing resources like food, clean water, and oxygen. Understanding ecosystems helps us appreciate the importance of conservation and the impact of human activities on nature.