Phylum Chordata is the only phylum where all the members have a  backbone.   However, there is more to it than that, especially given that there  are two invertebrate châ¦ordate groups - Urochordata (tunicates) and  Cephalachordata (lancelets) - whose backbone is not in the form of  actual vertebrae.
The answer. Anger is a normal, healthy emotion that we all experience at times. Like any other emotion, anger exists on a continuum with varying degrees of severity. The range of emotions may include minor annoyance, irritation or frustration, all the way up to fury or rage.
Oh my lord, I have that fear. I'd like to know what it's called too. Fear of anger is called Angrophobia. *edit* The ones who stated it was anxiety, they are correct. This type of fear is brought on by anxiety. Be it social anxiety or not.