True or False an overtone occurs when two or more sound waves are produced at the same time. 1. True.
2. False

True.

Explanation:

An overtone is any frequency greater than the fundamental frequency of a sound.

Overtone, in acoustics, tone sounding above the fundamental tone when a string or air column vibrates as a whole, producing the fundamental, or first harmonic. If it vibrates in sections, it produces overtones, or harmonics. The listener normally hears the fundamental pitch clearly; with concentration, overtones may be heard.

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.