http://en.wikipedia.org/wiki/Carrying_capacity From Wikipedia, the free encyclopedia The carrying capacity of a biological species in an environment is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water and other necessities available…
http://en.wikipedia.org/wiki/Optimum_populationFrom Wikipedia, the free encyclopedia Optimum population refers to the size of a population that produces the best results according to chosen end targets. One text from 1926 presented a single end target…
http://en.wikipedia.org/wiki/I_%3D_PAT From Wikipedia, the free encyclopedia I = PAT is the lettering of a formula put forward to describe the impact of human activity on the environment. I = P × A × T In words: Human Impact…