In 2000, Delegates from 122 Countries Completed a Global Treaty

question 29

Multiple Choice

In 2000, delegates from 122 countries completed a global treaty to control 12 persistent organic pollutants (POPs) , which include

• A) DDT
• B) ozone
• C) chlorofluorocarbons
• D) methane gas
• E) mercury

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Definitions:

Tympanic Cavity

An air-filled space in the temporal bone of the skull behind the eardrum that contains the bones of the middle ear.

External Acoustic Meatus

The ear canal leading from the outer ear to the eardrum.

Oval Window

A membrane-covered opening that leads from the middle ear to the vestibule of the inner ear, where sound vibrations are transmitted.

Auditory Receptors

Receptor cells located in the cochlea of the inner ear that detect sound waves and convert them into neural signals for the brain to interpret.