An ecologist is a scientist who studies the relationships between organisms and their environment. They examine how living things interact with each other and with the nonliving parts of their surroundings.  This includes studying populations, communities, ecosystems, and the biosphere as a whole. Ecologists Research And Study About How The Various Living Organisms (Including Animals, Plants, And Microorganisms) Interact Among Themselves And With Their Biological And Physical Environment. They Study The Habitats Of Living Organisms And Ecosystems. Interactions Could Involve A Range Of Biological Habits, Events, And Phenomenon Such As - An Animal Or Plant May Eat Or Consume Other Animals; A Particular Species Of Animals May Communicate With One Another; Their Social Behaviour; Their Sexual Behaviour And Other Ways Of Reproduction; Their Ways Of Coping Up With Changes In Ecosystem And Adaptation; Their Evolution; And Their Interactions With Humans And So On.