biotic and abiotic surroundings to which an organism must constantly adjust; includes air, water, weather, temperature, other organisms, and many other factors
a collection of structures, cycles, and processes that relate to and interact with each other
All the organisms in a given area as well as the abiotic factors with which they interact; a community and its physical environment.
nonliving, physical features of the environment, including air, water, sunlight, soil, temperature, and climate
Study of the environment, including the social, political, and ethical aspects or dimensions
Natural services or natural capital that support life on the earth and are essential to the quality of human life and the functioning of the world's economies.
organisms or physical factors that serve as a gauge for environmental changes
the ability to meet humanities current needs without compromising the ability of future generations to meet their needs
(Examples: H2O, CO2, O3, methane (CH4), CFC's) (EFFECT: they trap outgoing infrared (heat) energy causing earth to warm
The amount of biologically productive land and water needed to support a person or population.
a method of investigation involving observation and theory to test scientific hypotheses
The number of subjects used in an experiment or study. Generally, the larger the better.
the ability and willingness to assess claims critically and to make judgments on the basis of objective and supported reasons
well-tested explanation that unifies a broad range of observations, a tentative theory about the natural world (based on principles)
in an experiment, a group that serves as a standard of comparison with another group to which the control group is identical except for one factor