Nitrogen Is Often in Short Supply in Terrestrial Ecosystems Because

question 21

Multiple Choice

Nitrogen is often in short supply in terrestrial ecosystems because

• A) there is very little free nitrogen in the air.
• B) atmospheric nitrogen exists primarily in the stratosphere and does not come into contact with terrestrial ecosystems.
• C) atmospheric nitrogen cannot be used by most organisms.
• D) nitrogen solubility in water is very low, and therefore aquatic nitrogen enters cells very slowly.
• E) atmospheric nitrogen varies widely from location to location, and local shortages occur frequently.

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Definitions:

Net Operating Income

The profit derived from a company's regular business operations, excluding deductions of taxes and interest expenses.

Revenue And Spending Variances

The differences between the actual and budgeted amounts of revenue and expenses.

Flexible Budget

A financial plan that adjusts or varies with changes in volume or activity.

Spending Variance

The difference between the budgeted amount of expenditure and the actual amount spent.