411 Ch 6

A form of non hereditary adaptation through which an individual compensates for a complex of environmental factors

The range of tolerance to environmental conditions and/or factors

An external condition that causes a potentially injurious change in biological systems

Materials that are required to support a group

The relative constancy of internal body conditions.

Essential resources that are expensive, rare, or simply difficult to acquire.

The principle that, under steady-state conditions, growth, and development of an organism are dependent on all requisite needs being present in at least minimal amounts

That environment component whose presence is beyound the limits of tolerance required for growth and development of an organims.

Observable biological changes that are induced by the environment.

Observable changes in organism that vary as a function of environmental variation.