Minerals Are Grouped into Mineral Classes Primarily on a Basis

question 20

Multiple Choice

Minerals are grouped into mineral classes primarily on a basis of ________.

• A)chemistry,specifically the cations within the chemical formula
• B)chemistry,specifically the anions within the chemical formula
• C)hardness;hard,soft,and medium are the three primary classes
• D)the number of cleavage directions present

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Definitions:

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Gains from trade refer to the net benefits that countries or individuals obtain by selling what they produce and buying what they consume more efficiently through trade.

International Trade

The exchange of goods and services between countries, driven by comparative advantage and resulting in increased economic efficiency.

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The process of selling and shipping cheese to other countries from the country of origin.

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A tax imposed by a government on imported goods or services to regulate trade and protect domestic industries.