Artificial ecosystem– It is formed by human- Fishing pond. Natural ecosystem– Natural ecosystem is the result of natural process. There is no any role of Human for creation of Natural ecosystem. Example : Forest, Mangrove forest, Lakes etc. Here the main source of energy is sun. Energy pyramid is always upright. Ecosystem has two main component. Biotic component– Producer play primary role and consumer comes under it Abiotic component–Temperature, water, water vapour, soil etc.