The Density of Rocks Is Generally Related to Composition; Rocks

question 37

Multiple Choice

The density of rocks is generally related to composition; rocks with higher silica contents tend to be less dense.Which of the following places rock compositions in order of increasing density?

• A) felsic,intermediate,ultramafic,mafic
• B) ultramafic,mafic,intermediate,felsic
• C) felsic,intermediate,mafic,ultramafic
• D) mafic,ultramafic,intermediate,felsic

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Poverty Line

The minimum level of income deemed adequate in a particular country to live on, used as a standard to classify people into economic categories.

Basic Subsistence

The minimum resources necessary for a person to live, including food, water, and shelter.

Older Adults

Individuals who are in the later stage of their life, often defined as being 65 years or older.

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Households earning significantly less than the average income, often qualifying them for certain types of government assistance.