Estimates from the U

question 322

Multiple Choice

Estimates from the U.S. Treasury Department suggest that the typical family in the highest income quintile pays approximately what percent of their total income in federal taxes?

• A) 6 percent
• B) 25 percent
• C) 50 percent
• D) 76 percent

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Definitions:

Limestone Cave

A natural underground space formed by the dissolution of limestone rock by water.

Water Table

The level below which the ground is saturated with water, marking the boundary between the soil surface and groundwater.

Stalactites

Icicle-shaped formations that hang from the ceiling of a cave, formed by the deposition of minerals from water dripping down.

Calcium Carbonate

A chemical compound, CaCO3, found in rocks such as limestone, chalk, and marble, and is the main component of pearls and the shells of marine organisms.