Yes, "happen" is an action verb because it refers to an action or an event taking place. It describes the occurrence of something taking place or coming to pass.
The function of a dielectric is to be the support between to conductive components. It has nothing to do with the action taking place, but buffers the area in which the action is taking place.
To this question, in this paragraph, what time of day is the action taking place, it is. For further explanation, please visit prepositionland.
Injunction
sunrise
The progress of the american way
A verb shows an action.
Itz 3 miles east
Phagocytes are destroying pathogens
asasa
Relationships between nouns or pronouns in a sentence. Direction or location of an action. Time or place where an action is taking place.
An 'injunction' is an order issued by the court which stops or prevents some 'action' from taking place.