Oxygen,silicon and Aluminum Are the Three Most Abundant Chemical Elements

question 1

Multiple Choice

Oxygen,silicon and aluminum are the three most abundant chemical elements within earth's crust.Why,then is aluminum recycled?

• A) To reduce the consumption of electrical energy relative to that which is needed to extract aluminum from ore
• B) Because aluminum is a precious metal
• C) Even though aluminum is abundant in the crust, most of it is within seafloor crust and consequently difficult to obtain
• D) All of these reasons are true.

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Definitions:

Useful Life

The estimated period over which an asset is expected to be usable for its intended purpose, affecting depreciation calculations.

Economic Value

A measure of the benefit provided by a good or service to an economic agent, often quantified in terms of willingness to pay or the added utility it offers.

Operating Cost

Expenses related to the day-to-day functioning of a business, such as rent, utilities, salaries, and equipment maintenance.

Useful Life

The estimated period over which a tangible asset is expected to be functional and contribute to the operations of a business.