Which of the Following Organisms First Introduced Oxygen into Earth's

question 50

Multiple Choice

Which of the following organisms first introduced oxygen into Earth's atmosphere?

• A)green algae
• B)cyanobacteria
• C)early protozoans
• D)plants

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Definitions:

Ethnic Backgrounds

Refers to an individual's cultural heritage, including the customs, traditions, and values inherited from one's forebears based on ethnicity.

Socioeconomic Backgrounds

The social and economic circumstances in which individuals are raised, which often influence their future opportunities, attitudes, and behaviors.

Longer Life

Refers to an increase in the average lifespan of a population, attributed to factors such as improved healthcare, nutrition, and living conditions.

Lower Classes

Social groupings at the lower end of a socioeconomic hierarchy, often characterized by limited access to resources.