In a framework for comparative toxicity assessment of Figure 24-2 (in the text) , what are differences between calculating human versus ecosystem effects?

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The Answer is One critical assumption is that the human spends only a given amount of time in the affected area and obtains a dose rather than a concentration that other species may have no ability to escape. This may work for some circumstances, but may not apply to air or water pollution in a city in a developing country where environmental regulations are not very strict or well-enforced.

In a Framework for Comparative Toxicity Assessment of Figure 24-2