Sound Is Being Discussed

question 69

Multiple Choice

Sound is being discussed. Technician A says a decibel is a measurement of the intensity of a sound. Technician B says the pitch of a sound is based on its frequency. Who is correct?

• A)A only
• B)B only
• C)both A and B
• D)neither A nor B

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Definitions:

Environmental Stress

Physical, chemical, and biological constraints on the productivity and vitality of living organisms due to environmental conditions.

Serotonin

A vital substance in the brain that helps balance emotions and enhance sensations of happiness and overall well-being.

Identical Twins

Twins that develop from a single fertilized egg and share exactly the same genetic material, making them genetically identical.

Single Placenta

Refers to one placenta supporting the development of one or more fetuses, typical in the case of monozygotic (identical) twins.