Trace Elements Are Those Required by an Organism in Only

question 16

Multiple Choice

Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?

• A) calcium
• B) iodine
• C) sodium
• D) phosphorus

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Definitions:

Conspiracy of Silence

A situation where a group of people agree not to mention, acknowledge, or discuss a particular subject or issue.

Public Debate

The open discussion and argumentation of topics of public interest, facilitating democratic engagement and information exchange.

Civil War

An internal conflict within a country between opposing groups, often over issues of governance, territory, or identity.

American Exports

Goods or services produced in the United States and sold to buyers in other countries.