Many Elements in Seawater Are Found in Constant Ratios Throughout

question 36

Multiple Choice

Many elements in seawater are found in constant ratios throughout the ocean because

• A) The input of dissolved substances from rivers is broadly constant throughout the ocean
• B) Dissolved material in the ocean has been there for millions of years, with no input or removal
• C) They remain in the ocean longer than the mixing time
• D) This is not true; no elements are generally found in constant ratios

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Definitions:

Operating Income

Operating income is the profit earned from a firm's normal business operations, excluding deductions of interest and taxes.

Variable Costs

Costs that vary directly with the level of production or business activity, such as materials and labor.

Contribution Margin Ratio

The proportion of sales revenue that exceeds variable costs, representing the amount contributing to covering fixed costs and generating profit.

Operating Income

Earnings generated from a company's core business operations, excluding expenses and revenues that are not related to the primary activities.