The Organisms Originally Responsible for Putting Oxygen in Earthʹs Atmosphere

question 17

Multiple Choice

The organisms originally responsible for putting oxygen in Earthʹs atmosphere lived around

• A) 6 billion years ago.
• B) 1.5 million years ago.
• C) 3.5 billion years ago.
• D) 3.5 million years ago.
• E) 2.4 billion years ago.

---

Definitions:

Consistent Formatting

The practice of applying the same style and layout throughout a document or presentation to ensure clarity and professionalism.

Classification

The process of organizing or categorizing items, information, or ideas into groups based on shared characteristics or criteria.

General Idea

A broad or basic concept that encompasses the overall essence or main point of something.

Comparison And Contrast

A method of analysis that examines the similarities and differences between two or more items.