It is an adjective, as in a 'volcanic area'.
adverb
what part of speech is beneath
i want to know what part of speech is camping
The part of speech is a adjective
Oppose is a verb.
An adjective. As in 'types of volcanic activity'
If this word is legitimate, it is probably an adjective. A more common form is "volcanic".
is a volcanic eruption part of the rock cycle
is a volcanic eruption part of the rock cycle
The part of speech for this particular word is a noun.
part of speech
The part of speech for "answer" is a noun.
what part of speech is beneath
adverb
The part of speech for "explicit" is an adjective.
The part of speech for "lecturer" is a noun.
The part of speech for "rapid" is an adjective.