Read the Following Scenario, and Answer the Questions Below

question 20

Multiple Choice

Read the following scenario, and answer the questions below.

In North America, a toxic weed called leafy spurge was accidentally introduced and has grown and spread rapidly, covering millions of acres in north- central United States and south- central Canada. Leafy spurge is generally avoided by cattle and horses and may be toxic to them. Thus, rangeland where leafy spurge has spread has been damaged by the invasion of this plant.


-Leafy spurge has spread across many U.S.states.If left uncontrolled in these states,leafy spurge populations will _________ .

• A)eventually reach their carrying capacity
• B)shift from a J- curve to a constant rate of growth
• C)never experience environmental resistance
• D)shift from a logistic curve to a J- shaped growth curve

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Definitions:

Price Level

An index that measures the average level of prices of goods and services in an economy over a period of time.

Real Wages

Wages adjusted for inflation, reflecting the true purchasing power of income received by workers.

Nominal Income

The amount of money earned in current dollars, without adjustment for inflation, affecting purchasing power over time.

Real Income

Income of individuals or nations after adjusting for inflation, reflecting the actual purchasing power.