Ecology and Environment App provides information about activities that can be effectively used to teach environmental education in Hindi language. Ecology is the study of inter-relationship of organisms with physical as well as biotic environments. Organisms and environment are interrelated and interdependent. Any change in the environment affects the living organisms and vice-versa. An ecosystem is the structural and functional unit of ecology. It is a community of living organisms along with the abiotic components interacting together through energy flows and nutrient cycles.