Atmospheric Levels of Oxygen Gas Approached Modern Levels Approximately ______

question 52

Multiple Choice

Atmospheric levels of oxygen gas approached modern levels approximately ______ years ago.

• A)5 billion
• B)500 million
• C)50 million
• D)5 million
• E)500 thousand

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Definitions:

Perpetrator

A person who carries out a harmful, illegal, or immoral act.

Anonymous

Describes a person, action, or situation where the identity is unknown or not disclosed, offering privacy or secrecy.

Hostile Expectation Bias

The tendency to assume that people will react to potential conflicts with aggression.

Domestic Battle

A conflict or struggle occurring within a household, often between family members or domestic partners.