Why Is Gas Exchange in an Aquatic Environment More Challenging

question 44

Multiple Choice

Why is gas exchange in an aquatic environment more challenging than gas exchange in the air?

• A) The large surface area of gills makes them more susceptible to drying out.
• B) Less oxygen is available in water than in air.
• C) Carbon dioxide is eliminated by active transport in an aquatic environment.
• D) The countercurrent exchange process limits the amount of oxygen that can be extracted from water.
• E) Gills have a poor blood supply.

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Definitions:

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a specific price in a given time period.

Quantity Supplied

The aggregate quantity of a product or service that suppliers are prepared and capable of selling at a particular price during a defined time frame.

Shortage

A condition where the quantity demanded of a good exceeds the quantity supplied at the market price.

Equilibrium Price

The price at which the quantity of goods supplied is equal to the quantity of goods demanded in the market.