At a Minimum, Primary Producers Require Water, Carbon Dioxide, and Light

question 121

Multiple Choice

At a minimum, primary producers require water, carbon dioxide, and light. These are things that are readily available in most ecosystems. However, we do not observe the same rates of net primary productivity in every region of the globe. Which of the following statements BEST reflects one reason why rates of productivity are not the same everywhere?

• A)Rates of net primary productivity are actually the same everywhere; scientists just need to calculate the rates relative to plant biomass in a given ecosystem.
• B)Although water is limited in certain ecosystems, nutrients that are scarce actually limit net primary productivity because they are necessary for growth.
• C)Although water is limited in certain ecosystems, irrigation would solve the problem and equalize rates of net primary productivity in every ecosystem.
• D)Rates of net primary productivity are actually limited by the amount of solar radiation. If net primary productivity were calculated as a yearly average, then this would show that ecosystems have the same rate of productivity.

Comprehend the method to calculate employee and employer contributions at different ages.

Understand the functionalities and limitations of two-way data tables.

Know the implications of investment allocations in decision models.

Understand how to calculate slack in project management using spreadsheet tools.

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Definitions:

Navigation Acts

A series of British laws that regulated colonial trade and enabled England to collect taxes from its colonies by controlling goods shipped to and from the colonies.

British Regulating Trade

The set of policies and laws implemented by Britain to control trade within its empire, including the colonies.

Language of Freedom

The use of rhetoric, symbols, and phrases that evoke concepts of liberty and emancipation, often utilized in political and social movements.

Colonial History

Refers to the period of history involving the discovery, colonization, and establishment of control by European powers over regions in the Americas, Africa, and Asia from the late 15th century to the early 20th century.