Welcome to WordPress. This is your first post. Edit or delete it, then start writing!
A sound wave is the pattern of disturbance caused by the movement of energy traveling through a medium (such as air, water, or any other liquid or solid matter) as it propagates away from the source of the sound
Una respuesta a «Hello world!»
Hi, this is a comment.
To delete a comment, just log in and view the post's comments. There you will have the option to edit or delete them.