What Do We Mean by "The Oxygen Crisis" in Relation

question 37

Multiple Choice

What do we mean by "The Oxygen Crisis" in relation to the evolution of life on Earth?

• A) the extinction of older anaerobic life as oxygen builds up in the atmosphere
• B) the time period before the development of the ozone layer
• C) a period when evolution accelerated so rapidly that there was insufficient oxygen available
• D) the destruction of oxygen in the early atmosphere

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Definitions:

Extinction

The permanent loss of all members of a species from the earth, leading to a decrease in biodiversity.

Century

A period of one hundred years.

Estimated

An approximation or educated guess based on available information or data, often used when exact numbers are unavailable.

Living Organisms

Entities that display the characteristics of life, including the ability to grow, reproduce, respond to stimuli, and often, to move.