Here's why:
* Main Clause: The main part of the sentence is "The clothes and food get wet". This tells us the action happening.
* Subordinate Clause: The clause "because rain comes through the roof" provides a reason or explanation for the main clause. It's dependent on the main clause and doesn't stand alone as a complete sentence.
* Subordinating Conjunction: The word "because" connects the subordinate clause to the main clause and indicates the reason for the action.