Which Were the First Organisms to Release Oxygen by Photosynthesis

question 47

Multiple Choice

Which were the first organisms to release oxygen by photosynthesis?

• A) Algae
• B) Cyanobacteria
• C) Gymnosperms
• D) Flowering plants
• E) Green sulfur bacteria

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Definitions:

Labor

The combined physical and mental exertion employed in creating goods and services.

Marginal Physical Product

The change in total physical output that results from a one-unit increase in the quantity of one input, holding other inputs constant.

Marginal Revenue Product

The extra income derived from the use of an additional unit of a resource or input in production.

Input

Resources such as labor, materials, and capital that are used in the production process to create goods and services.