What three-factor model is used for representing the impact on environment? What is a fourth factor that could be added to this? Give a simple explanation for each factor and describe what it means in terms of human impacts on the environment
What will be an ideal response?
The full equation is I = P + A + T.
The terms are as follows: I = total impact on the environment by a population of individuals; P = population, which represents the value for the size of the population; A = affluence, which represents the value for the relative standard of living or greater per capita resource consumption that accompanies greater wealth; T = technology, which represents changes in the availability of technology and can either increase or decrease impact, depending on whether the change makes resources more or less sustainable. The fourth factor that could be added is S, for sensitivity, to denote how sensitive a given environment is to these pressures.
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