Answer:
Yes
Step-by-step explanation:
Specifically, "unless" is a subordinate conjunction. This means a word that connects a dependent to an independent clause.
A dependent clause is not a complete sentence, in other words, a phrase, and it doesn't make sense when it is left alone- it can't stand by itself so that is why it needs to be linked with an independent clause. Hence, the name "dependent" clause.
Example:
... after he ran track.
... when she ate.
An independent clause is a clause that can stand by itself and expresses a complete thought.
Drinking tea is very pleasant in the evening.
She is so nice and helpful when she helps me with my homework.