Although Gabby loves plants, she knows she has too many which relationship exist between the clauses. Would it be a relationship between a dependent clause and a independent clause or a relationship within a single independent clause or a relationship between a dependent clause and two independent clauses or a relationship between two independent clauses.
The relationship between the clauses in this sentence is a relationship within a single independent clause. The main clause is "Gabby loves plants," and the subordinate clause "she knows she has too many" provides additional information about Gabby's relationship with her plants.
