Use the Diagram Showing the Spread of the Cattle Egret

question 50

Multiple Choice

Use the diagram showing the spread of the cattle egret, Bubulcus ibis, since its arrival in the New World, to answer the question. The range of cattle egrets has expanded between 1937 (dark region in South America) and today, as depicted in the map with lighter shades indicating more recent advancements of the egret over time. Which of the following claims best explains the expansion of the cattle egret range?

• A) Climatic factors, such as sunlight, temperature, and precipitation, provide a suitable habitat for cattle egrets.
• B) There are no predators for cattle egrets in the New World, so they continue to expand their range.
• C) The abundant area and little competition with other birds occupying similar habitats met the biotic and abiotic requirements of the cattle egret expansion.
• D) The first egrets to colonize South America evolved into a new species capable of competing with the native species of herons and egrets.

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Definitions:

Marginal Product

The extra yield generated from the utilization of an additional unit of a specific input, with all other inputs remaining unchanged.

Specific Input

A specific input in production is one that is exclusively used in the production of a particular good or service, often leading to unique advantages or efficiencies.

Hourly Wage

The rate of pay for each hour worked, commonly used to compensate employees in many jobs.

Cost of Gasoline

The price consumers pay for gasoline, influenced by factors like oil production levels, taxes, and demand for fuel.