Derived from the Greek words oikos, and logos meaning “study of home.” Preceding the 1935 introduction of the term “ecosystem” by Sir Arthur Tansley, Vladimir I. Vernadsky used it to define the science of the biosphere. Ecology studies the Earth and its systems, including the interrelationships of all living things and all elements of their environmen. The science was further developed from the work of Ernest Haeckel when investigating ‘the study of living things within their environmental context’.