Table 20-4 Source: U.S. Bureau of Census

question 241

Multiple Choice

Table 20-4

Source: U.S. Bureau of Census
-Refer to Table 20-4.In 2007,the bottom 60% of families have

• A) only 12% of total income in the U.S.
• B) only 27% of total income in the U.S.
• C) 50% of total income in the U.S.
• D) 73% of total income in the U.S.

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Definitions:

Twilight Zone

The twilight zone refers to the deep region of the ocean lying below the sunlit surface waters but above the dark abyss, characterized by minimal light penetration.

Bathyal Zone

relates to the part of the ocean's pelagic and benthic zones that extends from the edge of the continental shelf to the abyssal zone, characterized by minimal light penetration and a diversity of specialized organisms.

Coastal Zone

The interface where the land meets the ocean, encompassing shoreline environments as well as adjacent coastal waters, characterized by its unique biological and physical attributes.

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.