Final answer:
Environmental noise refers to unwanted sounds from the environment that can interfere with perception, while internal noise refers to unwanted sounds originating within the body.
Step-by-step explanation:
In the context of sound, environmental noise refers to unwanted sounds from the surrounding environment that can interfere with the perception or understanding of other sounds or information.
Examples of environmental noise include traffic sounds, loud music, or construction noise.
On the other hand, internal noise refers to unwanted sounds that originate within the body and can interfere with hearing or other physiological processes.
Examples of internal noise include the pulsing of blood in the ears or sounds produced by the body's organs.