What Happens During the Maturation of Coal

question 55

Multiple Choice

What happens during the maturation of coal?

• A) impurities are driven off
• B) the coal is buried and squeezed to a smaller volume
• C) the energy content of the coal increases
• D) methane is driven off
• E) all of these

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Definitions:

Environmental Standards

Regulations and criteria set by authorities concerning pollutants and emissions to preserve environmental quality.

Marginal Benefit

The additional satisfaction or value a consumer receives from consuming one more unit of a good or service.

Pollution

The introduction of contaminants into the natural environment, causing adverse change and harm to habitats and organisms.

Sources

Refers to the origins or places from which something is obtained, often used in the context of gathering information or materials.