What Evidence Indicates Oxygen Started Accumulating in the Atmosphere and Oceans

question 30

Essay

What evidence indicates oxygen started accumulating in the atmosphere and oceans during the Proterozoic? How does this evidence support the accumulation of oxygen?

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Definitions:

Resilience

The ability to recover quickly from difficulties; toughness and adaptability in the face of adversity.

Strikes

Work stoppages caused by the mass refusal of employees to work, usually in protest against working conditions, pay levels, or other labor issues.

Win/Lose

A competitive situation or negotiation outcome where one party's gain is exactly balanced by another party's loss.

Advocate

A person who publicly supports or recommends a particular cause or policy.