First, let’s define the term Ecological Footprint
The ecological footprint is a measure of human demand on the Earth’s ecosystems. It is a standardized measure of demand for natural capital that may be contrasted with the planet’s ecological capacity to regenerate. It represents the amount of biologically productive land and sea area necessary to supply the resources a human population consumes, and to assimilate associated waste.
Wikipedia
An ecological footprint is the measure of how much of earth’s biological capacity is required by an individual, group, or activity.
eHow.com
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