All mammals: 1  Are vertebrates (which means they have a backbone The column of bones (spine) in the back of many animals. 2  It supports the body. 3  An animal with a backbone is called a vertebrate. or spine A stiff, sharp projection on an animal; another word for quill.
Television presenter. A presenter is a person who introduces or hosts television programs (or segments thereof such as an infomercial advertiser).
The host is the person who initiated the WebEx meeting. The presenter is the person controlling the meeting at any given time. Usually the host and the presenter are the same person, but the host can allow any meeting participant to become the presenter.