Question

xerophthalmia means dry eyes.
a true
b false
question 13
hertz measures the intensity or loudness of a sound.
a true
b false

Explanation:

• Xerophthalmia: The term "xerophthalmia" is derived from the Greek words "xero" (meaning dry) and "ophthalmia" (meaning eye inflammation). It specifically refers to dryness of the eyes, often due to vitamin A deficiency or other ocular surface disorders.
• Hertz: Hertz (Hz) is the unit of measurement for frequency, which refers to the number of cycles or vibrations per second. For sound, frequency determines the pitch (e.g., a high - pitched sound has a high frequency). The intensity or loudness of a sound is measured in decibels (dB), not hertz.

Answer:

A. True (for the xerophthalmia question)
B. False (for the hertz question)