Why Did the Presence of Cyanobacteria on Earth in the Past

question 8

Multiple Choice

Why did the presence of cyanobacteria on Earth in the past allow humans to exist?

• A) It was the first form of life.
• B) It oxygenated the atmosphere.
• C) It fertilized the soil to let plants grow.
• D) It increased the carbon dioxide in the atmosphere, causing the greenhouse effect.
• E) It was the first life form based on DNA.

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Definitions:

Voir Dire

A legal process in which prospective jurors are questioned about their backgrounds and potential biases before being chosen to sit on a jury.

Peremptory Challenge

A legal procedure allowing attorneys to reject a certain number of potential jurors without stating a reason, typically used in court to dismiss jurors believed to be biased.

Pretrial Publicity

Media coverage of a legal case before the trial has begun, which can influence public opinion and potentially the impartiality of the trial.

Bias Exposure

The act of encountering or being subjected to biases, which can shape attitudes, beliefs, or behaviors in a prejudiced way.