When Did Cyanobacteria First Begin Producing Oxygen

question 69

Essay

When did cyanobacteria first begin producing oxygen?

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Definitions:

Larger Contract

A contract agreement of significant size or value, often in the context of business or legal transactions.

Smaller Contract

A legally binding agreement between parties that is less extensive or lower in value or duration compared to other contracts.

Cash Prize

A monetary award given to an individual or group as recognition for achievement or as an incentive in competitions.

Throwing A Dart

An action involving skill and precision where a small, pointed missile is launched by hand toward a target, often used in games or competitions.