The Major Factor in the Population Explosion of the Zebra

question 1

Multiple Choice

The major factor in the population explosion of the zebra mussel in the Great Lakes region is ____.​

• A) ​the zebra mussel's specialist ecological niche
• B) ​because it has a hard shell that protects it from predation
• C) ​its ability to latch onto to boats and travel to new locations
• D) ​the illegal importation for restaurant food
• E) ​its rapid reproductive rate and its lack of natural enemies that might control its population

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Definitions:

Percentage Change

Percentage Change is a mathematical calculation that shows how much a quantity has increased or decreased as a percentage of its previous amount.

Incomes

Periodic earnings obtained from professional activities or financial investments.

Services

Economic activities that produce intangible goods, such as entertainment, healthcare, and education.

MPC

A measure of the rate at which consumers are likely to spend additional income, rather than save it.