An ecosystem is a functional unit of nature in which living organisms interact with one another and with the physical environment, forming a complex web of relationships that sustains life. It includes all plants, animals, microorganisms, and non-living elements in a particular area, linked through energy flows, nutrient cycles, and ecological processes. An ecosystem can be as vast as a rainforest or as small as a pond, but in every case it is defined by the interdependence of its components and the balance between biotic and abiotic factors. Understanding ecosystems is essential for managing natural resources, conserving biodiversity, and planning sustainable urban development. The components of an ecosystem are broadly classified into biotic and abiotic elements. The abiotic components constitute the physical and chemical environment in which organisms live. They include sunlight, temperature, air, water, soil, minerals, and the climatic conditions of a region. Sunlight is the primary source of energy, driving photosynthesis and regulating temperature. Water supports metabolic activities, shapes habitats, and determines the distribution of organisms. Soil provides nutrients, anchors plants, and influences the types of vegetation and microbes present. Air supplies essential gases like oxygen and carbon dioxide, while temperature and humidity regulate growth, reproduction, and migration of species. These factors vary across ecosystems, creating different niches and influencing productivity. Biotic components encompass all living organisms in the ecosystem and are grouped into producers, consumers, and decomposers based on their role in energy transfer. Producers, or autotrophs, are mostly green plants, algae,