Respuesta :
Hyphens and Dashes. A hyphen joins two or more words together while a dash separates words into parenthetical statements. The two are sometimes confused because they look so similar, but their usage is different. Hyphens are not separated by spaces, while a dash has a space on either side
a hyphen introduce a main idea: a dash separates items in a series
Answer:
a hyphen separates a prefix ending in a vowel from a root word beginning with a vowel; a dash does not
Explanation:
You should use a hyphen to connect a prefix to another word if the prefix ends in a vowel and the base word also begins with one.
e.g. "pre-eminent," “co-own,” "anti-immune".
You cannot use a dash with these words.