Photosynthesis, Once It Was Planet-Wide, Changed the Atmosphere of the Earth

question 3

Multiple Choice

Photosynthesis, once it was planet-wide, changed the atmosphere of the Earth by introducing a significant amount of

• A) oxygen
• B) carbon dioxide
• C) methane
• D) ammonia
• E) vibranium

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Definitions:

Nonlabor Income

Income received that is not earned from direct labor or employment, such as dividends, interest, or rental income.

Wage Rate

The amount of money paid to employees for their work or services, often expressed per hour or year.

Labor

The human labor, involving both physical and intellectual activities, utilized in the creation of products and services.

Leisure

Free time when one is not working or occupied; time available for ease, relaxation, and activities one enjoys.