Refer to the Figure Above

question 8

Multiple Choice

Refer to the Figure above. Suppose that MD_u represents the damages associated with ambient levels of benzene in an urban area and MD_r represents those same damages in a rural area. If the ambient emission standard is set at e_u, the standard yields a (n) _________ level of pollution in urban areas but is unnecessarily ____________ for rural areas.

• A) socially efficient; strict
• B) socially efficient; lenient
• C) inefficient; acceptable
• D) inefficient; compromised

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Definitions:

Smelting

The process of extracting a metal from its ore by using heat and a chemical reducing agent to decompose the ore, removing impurities.

Igneous Rocks

Rocks formed from the cooling and solidification of magma or lava, classified into intrusive (slow cooling inside the earth) and extrusive (quick cooling on the surface) types, such as granite and basalt.

Nonfuel Mineral Resources

Minerals found in the Earth's crust that are used for everything except fuel, such as metals, stone, and industrial minerals like gypsum and salt.

Metamorphic Rock

Rock that has been transformed by heat, pressure, or chemical processes from its original state into a new form.