Most Metals, Such as Iron and Copper, Do Not Occur

question 39

Multiple Choice

Most metals, such as iron and copper, do not occur in a pure state in Earthʹs crust, but occur within ______________.

• A) the O horizon of the soil
• B) ores
• C) organic materials
• D) igneous rocks
• E) sediments

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Definitions:

Relative Advantage

The degree to which an innovation is perceived as better than the idea it supersedes.

Diffusion

The process through which an innovation is communicated over time among the participants in a social system.

Innovation

The act of inventing, evolving, and applying novel concepts, goods, or techniques to enhance or substitute the current ones.

Observability

The degree to which the results of an innovation or change can be seen and understood by others.