In the 1980s, for the First Time in the Twentieth

question 14

Multiple Choice

In the 1980s, for the first time in the twentieth century

• A) income gaps widened between the richest and the poorest Americans.
• B) middle-class incomes rose.
• C) the poor made economic gains.
• D) the economy was uniformly healthy.
• E) the majority of Americans were middle class.

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Definitions:

Abyssal Zone

A deep-sea environment located at depths of 4,000 to 6,000 meters, characterized by high pressure, low temperatures, and complete darkness.

Benthic Zone

The ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and sub-surface layers.

Littoral Zone

The shallow nearshore area of a body of water, where sunlight can reach the bottom, supporting diverse aquatic plants and animals.

Limnetic Zone

The open surface waters in a freshwater habitat, away from the shore, where there is enough light penetration to support photosynthesis.