What Best Explains the Fact That Most Fish Have a Relatively

question 142

Multiple Choice

What best explains the fact that most fish have a relatively light colored belly and a relatively dark-colored top or back?

• A) camouflage from bigger fish below and above
• B) mating selection preference
• C) evolutionary group survival
• D) acclimation to varying ocean depths

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Definitions:

Deltoid

A large, triangular muscle covering the shoulder joint that is responsible for lifting the arm and giving the shoulder its range of motion.

Muscle Fibers

The cells of muscles that contract to produce movement, consisting of myofibrils, which are themselves composed of sarcomeres, the basic unit of muscle contraction.

Contusion

A contusion is a medical term for a bruise, which is a mark on the skin caused by blood trapped under the surface after an injury to the small blood vessels within the dermis or subcutaneous tissues.

Sprain

An injury to ligaments caused by being stretched beyond their normal capacity and possibly torn.