the role played by organisms and environmental processes in creating a healthy environment for human beings, from production of oxygen to soil formation and maintenance of water quality
Ecosystem products (food, fiber) and services (water and air purification) that humans derive from functioning ecosystems.
The benefits which an ecosystem provides to its inhabitants. Many of the services humans pay for through use of technology are cheaply and efficiently done in nature. Examples of ecosystem services include: purification of water and air, seed dispersal and pollination of crops, and waste detoxification and decomposition.