The Mechanism Whereby Buoyancy Is Achieved in Different Kinds of Fishes

question 58

Multiple Choice

The mechanism whereby buoyancy is achieved in different kinds of fishes is

• A) through the presence of a large, oily liver when a swim bladder is not present.
• B) through the presence of a swim bladder that is kept filled as the fish periodically swims to the surface and gulps air.
• C) through the presence of a swim bladder that is regulated internally by structures that add or remove gas from the bladder by capillary beds.
• D) All of the choices are methods for achieving buoyancy.
• E) None of the choices are correct.

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Economic or fiscal policy based on judgment and decision-making in response to changing economic conditions, rather than set by predetermined rules.

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The cost of borrowing money or the return on investment for savings, typically expressed as a percentage of the principal amount.

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Economic strategies implemented by the government through changes in spending levels and tax rates to influence economic conditions.