Use the Following Figure to Answer the Question

question 22

Multiple Choice

Use the following figure to answer the question.

After looking at the experiment in the figure, what can be concluded about productivity in marine ecosystems?

• A) Nothing can be said based on this information.
• B) Marine organisms break down iron for energy and thus for productivity.
• C) Iron can be a limiting nutrient in productivity.
• D) Productivity increases when chlorophyll a is added.

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Definitions:

Investment Turnover

Investment turnover measures how efficiently a company generates sales from its investment in fixed assets.

Profit Margin

The percentage of revenue remaining after all expenses, taxes, and costs have been deducted from total sales.

Return on Investment

A measure used to evaluate the efficiency or profitability of an investment, calculated by dividing the net profit by the cost of the investment.

Gross Profit

The profit a company makes after deducting the costs associated with making and selling its products, or the costs associated with providing its services.