Large Amounts of Oxygen Gas Appeared in Earth's Atmosphere About

question 54

Multiple Choice

Large amounts of oxygen gas appeared in Earth's atmosphere about ________ years ago.

• A)200 million
• B)1)7 billion
• C)2)7 billion
• D)4)5 billion

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Definitions:

Emotionally

Pertaining to or involving emotions or the feelings.

Demands

Pressures or requirements that are placed upon an individual or system.

Expectations

Beliefs or anticipations about the way events, actions, or processes will unfold in the future, often influencing individuals' behavior and decision-making.

Pressure

The continuous physical force exerted on or against an object by something in contact with it, or the influence or stress on a person to perform or conform.