Refer to the Figure

question 22

Multiple Choice

Refer to the figure.
The figure represents the results of an experiment by Vredenburg, who compared the numbers of frogs in several categories of lakes: lakes never having trout (control) , lakes having trout (control) , and lakes from which he removed trout at different times. He observed changes in frog populations over eight years in all lakes. Based on evidence from the figure, which conclusion can be made about the effect of trout removal on frog populations?

• A) Frog populations in some lakes overpopulate after the removal of trout.
• B) Frog populations increase in some removal lakes but not in others.
• C) Frog populations never recover once trout have been introduced.
• D) Frog populations begin to recover once trout are removed.

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Definitions:

Increase Production

The process of raising the output or quantity of goods and services produced by a firm or country.

Nonrefundable Ticket

A ticket purchase that cannot be returned for a refund, often cheaper than refundable options and common in air travel.

Remainder

The amount left over or remaining after division or allocation.

Alternative

An option or choice that is available as a substitute or replacement for something else.