Question

How is an ecological footprint determined

Answer 1

An ecological footprint is determined by considering all of the biological materials consumed and all of the carbon dioxide emissions generated by that person a year. 
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Answer 2

Answer:

A individual's ecological footprint is computed by adding all the requirements of people competing for biologically profitable space.

Explanation:

A individual's ecological footprint is computed by adding all the requirements of people competing for biologically profitable space, like cropland for growing potatoes or cotton, or forest for producing timber or sequestrating carbon dioxide emissions.

The Ecological Footprint uses core product yields (from farmland, woodland, pastureland, and fisheries) to measure the area needed to sustain a given operation.