The term used for a group of words that does not contain a verb or a subject and that acts as a single part of speech is D. a phrase.
M phase, or mitosis.
(You don't need to know this for your course but more properly cell division could also refer to meiosis or binary fission.)
When a pollutant is removed from the air by a natural process, it ends up somewhere else.
Maybe this helps ? Please look at the picture
