The Introduction of the Zebra Mussel from the Caspian Sea

question 25

Multiple Choice

The introduction of the zebra mussel from the Caspian Sea to the Great Lakes was:

• A)Intentional,to help clean the Great Lakes
• B)Accidental,it was brought over on the hulls of fishing ships
• C)Intentional,to provide food for an endangered fish
• D)Accidental,from the ballast water from ships
• E)Intentional,to provide food for humans

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Definitions:

Revolutions Per Minute

The unit of measure for rotational speed, indicating the number of full rotations completed by an object in one minute.

Power Triangle

A graphical representation in electrical engineering that shows the relationship between real power, reactive power, and apparent power in an AC circuit.

Power Factor

A dimensionless number representing the ratio of real power flowing to the load to the apparent power in the circuit, indicating efficiency in electrical systems.

Energy

The ability to do work, which can be transferred between objects and converted into different forms, such as electrical, thermal, or mechanical.