The ecosystem is an interaction between living beings (biotic component) and their physical environment (abiotic component). Abiotic components include climatic factors such as rain, temperature, light, wind, humidity etc. and edaphic factors such as soil, pH, topography minerals. Biotic components include producer, consumer and decomposer. Producers are autotrophs as they synthesize their own food. Consumers depend on producers for their food. These are herbivores and carnivores. Decomposers are one which break down the dead organic materials of producers and consumers and obtains food.