Which Highly Reactive Gas Was Probably Absent from the Earth's

question 38

Multiple Choice

Which highly reactive gas was probably absent from the Earth's primitive atmosphere?

• A)O2 (oxygen gas)
• B)methane
• C)water vapor
• D)carbon dioxide

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Normal Profits

The level of profit needed for a company to remain competitive in the market, covering its opportunity costs.

Long Run

The time period in which all factors of production can be varied, but technology remains constant.

Product Differentiation

A marketing strategy that businesses use to distinguish their product from similar offerings in the market, through variations in quality, features, style, or branding.

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A market structure where many firms sell products that are similar but not identical, allowing for product differentiation and some price control.