The Primary Organisms That Make Up the Deep Scattering Layer

question 65

Multiple Choice

The primary organisms that make up the deep scattering layer are:

• A) zooplankton and fishes.
• B) phytoplankton.
• C) seston.
• D) nanoplankton.
• E) marine snow animals.

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Definitions:

Pole Polarity

Refers to the magnetic polarity (north or south) of the poles in a magnetic field, crucial in the functioning of electric motors and generators.

Lines of Magnetic Flux

Imaginary lines representing the strength and direction of a magnetic field, where the density of lines indicates the field's intensity.

Synchronous Speed

The speed at which the magnetic field in an AC motor rotates, dependent on the frequency of the supply current and the number of poles in the motor.

Turning Torque

The torque required to initiate rotation of a body from rest or to maintain rotation at a constant angular velocity.