Ecology: This is the study of living organism in relation to other organisms or their environment. In other words we can say ecology is the study of life. Ecology is not simultaneous with environment, environmental science, environmentalism or natural history . Ecology is nearly related to evolutionary biology, physiology, ethology or genetics .
In ecological studies an important focus area is come out that how biodiversity affects ecological function. In ecology, ecosystems sustain every life-supporting function on the planet or earth including water filtration, climate regulation, fibers, food, medicines, soil formation (pedogenesis), erosion control, or many other natural features of scientific, historical or spiritual value.