Phosphorus, Which Is Often a Limiting Nutrient in Ecosystems, Is

question 55

Multiple Choice

Phosphorus, which is often a limiting nutrient in ecosystems, is very important because it:

• A)is needed for molecules such as ATP, cell membranes, and nucleic acids.
• B)evaporates quickly.
• C)is found only in sedimentary rocks.
• D)is necessary for the production of cellulose so that autotrophs can grow and provide food for heterotrophs.
• E)is part of the hydrologic cycle.

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Definitions:

Dividend Cut

A reduction in the dividend amount paid by a corporation to its shareholders, often due to financial difficulties or the need to conserve cash.

Bird in the Hand Theory

A theory that suggests investors prefer the certainty of dividend payments to the possibility of much higher future capital gains.

Dividend Distribution

The method by which a corporation's earnings are distributed among its shareholders in the form of dividends.

Retaining Earnings

Profits kept by a company for reinvestment in its operations rather than distributed to shareholders as dividends.