Audible sound is the sound which is between 20 Hertz to 20000 Hertz and can be heard by human beings, whereas Inaudible sound may be below 20 Hertz or above 20000 Hertz and thâ¦is can't be heard by human beings.
Impact on humans. The domestication of animals began with the wolf (Canis lupus) at least 15,000 years before present (YBP), which then led to a rapid shift in the evolution, ecology, and demography of both humans and numerous species of animals and plants.
And that, the researchers say, suggests that dogs might have been domesticated as far back as 32,000 years ago. The researchers note that scientists have long held the notion that domestication of dogs and other animals has been associated with people and animals living in close quarters in relatively tight communities. Such conditions, they contend would almost certainly have a similar impact on people as well as the animals living in the same environment.