Which Factors Govern the Rate of Primary Productivity in Freshwater

question 69

Multiple Choice

Which factors govern the rate of primary productivity in freshwater and marine ecosystems?

• A) availability of water
• B) availability of sunlight and nutrients only
• C) depth of the water only
• D) depth of the water and availability of sunlight and nutrients
• E) availability of oxygen

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Definitions:

Factor XII

A clotting factor involved in the initiation of the blood coagulation cascade.

Blood Transfusion

The process of transferring blood or blood products from one person into the circulatory system of another.

Type O Blood

A blood type characterized by the absence of A and B antigens on the surface of red blood cells, making it a universal donor type for red blood cell transfusion.

Gene Expression

The process by which information from a gene is used in the synthesis of a functional gene product, typically proteins, influencing the cell's structure and function.