Aquatic Ecosystems Can Be Limited by Silicon Because

question 10

Multiple Choice

Aquatic ecosystems can be limited by silicon because

• A) there are few silicon organisms in the upper waters.
• B) many organisms compete for the silicon.
• C) silicon sinks slower than nitrogen or phosphorus.
• D) silicon sinks faster than nitrogen or phosphorus.

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Definitions:

Anatomic Dead Space

The portion of the respiratory system where gas exchange does not occur, including the nose, trachea, and bronchi, where air is moved in and out without being involved in oxygen/carbon dioxide exchange.

Respiratory Membrane

The thin barrier through which gas exchange occurs between the air in the lungs and the blood in capillaries.

Gas Exchange

The process by which oxygen is taken in and carbon dioxide is expelled, primarily occurring in the lungs between air in the alveoli and blood in the capillaries.

Surface Area

The total area of the outer surface of an object or the boundary covering of a three-dimensional figure.