Which Example Best Describes Both an Elemental Pool Where an Element

question 62

Multiple Choice

Which example best describes both an elemental pool where an element accumulates and an elemental sink where it is removed from circulation and locked up for long periods?

• A) Calcium in bones,which remains fairly stable throughout an animal's life
• B) Nitrogen that is made available to plants from their bacterial endosymbionts
• C) Fossil fuel deposits in which carbon is stored for hundreds of millions of years
• D) Atmospheric oxygen levels,which are maintained stable by photosynthesis
• E) Sulfur compounds,which react with water to produce acid precipitation

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Marginal Revenue

The revenue boost a firm experiences from the sale of an additional unit of a product or service.

Burritos

A Mexican dish consisting of a wheat flour tortilla rolled or folded around a filling, typically including beans, cheese, meat, and rice.

Marginal Revenue

The added financial gain received from selling an additional product or service unit.

Total Revenue

The total amount of money a company receives from its sales of goods or services, calculated as the quantity sold multiplied by the sale price.