The Most Likely Source of Early Earth's Atmospheric Oxygen Was

question 119

Multiple Choice

The most likely source of early Earth's atmospheric oxygen was

• A) volcanic eruptions.
• B) lightning striking water vapor.
• C) the spontaneous breakdown of fatty acids.
• D) photosynthesis by ancient cyanobacteria (blue-green algae).
• E) the decay of fossil organisms.

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Definitions:

Product Repositioning

The strategic process of changing a product's place in the market by altering its image, target audience, or distinct features.

Trialability

A characteristic of a product or service that allows potential consumers to experiment with it on a limited basis before making a purchase decision.

Free Sample

A promotional tactic in marketing where customers are given a portion of a product at no cost to stimulate trial or increase awareness.

Snob Effect

The phenomenon where the demand for a certain good increases as the perceived exclusivity or status associated with the good increases, appealing to consumers desiring social distinction.