(Figure: Toxic Waste) from the Graph, External Cost Per Ton

question 26

Multiple Choice

(Figure: Toxic Waste) From the graph, external cost per ton of toxic waste would be

• A) $60.
• B) $70.
• C) $80.
• D) $90.

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Definitions:

Atmospheric Pressure

The pressure exerted by the weight of the atmosphere, which at sea level is approximately 101.3 kilopascals (760 mmHg).

Respiratory Membrane

Membrane in the lungs across which gas exchange occurs with blood.

Thick Layer of Mucus

describes a dense secretion produced by mucous membranes, serving to protect and lubricate surfaces.

Pressure Gradient

A pressure gradient is the difference in pressure across a physical space, which drives the flow of fluids from regions of higher to lower pressure.