FIGURE 21-2 -Refer to Figure 21-2.If Disposable Income Is $3000,desired Consumption Expenditure

question 83

Multiple Choice

FIGURE 21-2
-Refer to Figure 21-2.If disposable income is $3000,desired consumption expenditure is equal to

• A)$0.
• B)$500.
• C)$1000.
• D)$1500.
• E)$2000.

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Definitions:

Tracheal Tubes

Air-conducting tubes in the respiratory systems of some invertebrates, notably insects, facilitating gas exchange.

Opercula

Flap-like structures in certain animals, such as fish, that cover and protect the gills, or the lid covering the opening of a snail's shell.

Alveoli

Tiny air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.

Countercurrent Exchange

A mechanism where fluids flow in opposite directions in adjacent channels, maximizing transfer rates of heat, gases, or other substances.