What Was the Probable Role of Oxygen Gas in the Early

question 2

Multiple Choice

What was the probable role of oxygen gas in the early stages of life's appearance on Earth?

• A) Cellular respiration, which depends on oxygen availability, provided abundant energy to the first life-forms.
• B) Oxygen promoted the formation of complex organic molecules through physical processes.
• C) Oxygen gas tends to disrupt organic molecules, so its absence promoted the formation and stability of complex organic molecules on the early Earth.
• D) Abundant atmospheric oxygen would have created an ozone layer, which would have blocked out ultraviolet light and thereby protected the earliest life-forms.

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Definitions:

Processing Further

Decision-making process regarding the additional refining or processing of products to enhance their value or marketability.

Intermediate Products

Goods that are used as inputs in the production of final products, not intended for end consumers.

Further Processing

involves additional operations on a product to enhance its value before selling.

Constrained Resource

A constrained resource refers to a limiting factor in a production or operational process, which restricts the output or throughput of the system.