Explain Why Only Anaerobic Bacteria Inhabited Earth for the First

question 43

Essay

Explain why only anaerobic bacteria inhabited Earth for the first two billion years of its existence.

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Definitions:

Income

Money received, especially on a regular basis, for work, through investments, or from business activities, used to fund day-to-day expenditures or save for the future.

Bottom Quintile

The lowest fifth or 20% segment of the population in a statistical distribution, often used in reference to income levels.

Income

Earnings received by an individual or business for their labor, investments, or through the sale of goods or services.

Lorenz Curve

Data plotted to show the percentage of income enjoyed by each percentage of households, ranked according to their income.