Well the relationship with tunnel,cave is that a cave has a tunnel,but i do not know about the other one
<span>The
adverb phrase used in the sentence above is where
oases are plentiful but distant from each other.</span>
<span>It consists of a word “where” which denotes the
place of occurrence that adds information about the word it modifies. Adverb
phrase usually begins with subordinating conjunctions and contains subject and
predicate.</span>
