The Two Basic Types of Circulatory Systems That Have Evolved

question 20

Multiple Choice

The two basic types of circulatory systems that have evolved over time are

• A)open and closed.
• B)single and double.
• C)transverse and repetitive.
• D)flat and circular.

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Definitions:

Distance Travelled

denotes the length of the path taken by an object or individual from one point to another, usually measured in units such as kilometers or miles.

Tungsten Filaments

Thin strands of tungsten used as the heating element in incandescent light bulbs, producing light when electrically heated.

Incandescent Bulbs

Electric light sources that produce light by heating a filament wire to a high temperature.

Tungsten Lightbulb

A type of incandescent light bulb that uses a tungsten filament to produce light when heated by an electric current.