1. Resource that can be replenished rapidly (in hours/centuries) through natural processes as long as it is not used up faster than it is replaced; examples include: fertile topsoil, forests, clean air

1. One or more communities of different species interacting with one another and with chemical and physical factors of the nonliving environment

1. Resources that exist in a fixed amount and take millions to billions of years to form; examples include copper, coral, oil, salt

1. Capacity of earth’s natural systems that support life, including human social systems, to maintain stability or to adapt to changing environmental conditions indefinitely

1. A broad-based interdisciplinary study of how humans interact with the environment

1. Everything around you

1. The natural resources and ecosystem services that keep humans and other species alive and that support human economies

1. The study of varying beliefs about what is right and wrong with how people treat the environment; provides useful tools for examining world-views

1. Harmful contamination of the environment by a chemical or agent entering it over a diffuse area

1. Asserts that humans are part of, and dependent on, nature and that Earth’s life-support system exists for all species, not just for humans

1. Something that cannot be used up or depleted

1. A social movement dedicated to sustaining Earth’s systems

1. The natural services that support life and human economies at no monetary cost, such as pollination and the purification of air and water

1. Materials and energy sources in nature that are essential or useful to humans