Sound is called the vibrations of the air perceived by our organ of hearing, caused, in turn, by the vibrations of some mechanical body. In this case, the frequency of body vibrations should be in the range from 20 vibrations per second to 20 thousand.
When bees, wasps, beetles, mosquitoes and other insects are flying, their fluttering wings are the source of sound. Moreover, the higher the vibration speed, the higher the sound. And, conversely, at a low vibration frequency (more rare flapping of the wings), the sound is lower, as in beetles, for example.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.