Chemically Based Extraterrestrial Life

question 52

Multiple Choice

Chemically based extraterrestrial life

• A) will not need to store information
• B) may not use DNA to store information but will very likely use a molecule with a similar function
• C) will certainly use DNA to store information, but with different nucleotides
• D) will certainly use DNA to store information

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Definitions:

Before-Tax Total Income

The total income earned by an individual or a business before any taxes are deducted.

Poorest 20 Percent

The segment of a population that ranks at the bottom fifth in terms of income.

Income Mobility

The ability of individuals or families to move up or down the economic ladder within a society over time.

Economic Status

An individual's or area's financial condition and stability, often measured by income, employment, and wealth indicators.