form and survival. A major ecological group of organisms tailored to a specific climatic or environmental situation on a big geographic area wherein they occur.
A part of the ecosystem that lacks the power to grow, transfer, or reply to stimuli, and does not require energy to continue to exist, such as daylight, air, water, rocks, and soil. It is a complicated environmental system, involving interactions among the many atmosphere, oceans, land, ice, plants, animals (including humans) and power from the Sun. As a qualification to the