In the sentence "When cats prowl at night, their eyes adjust to the dark," there are two clauses:
-
"When cats prowl at night" – This is a dependent clause because it cannot stand alone as a complete sentence. It introduces a condition but does not express a complete thought.
-
"their eyes adjust to the dark" – This is an independent clause because it can stand alone as a complete sentence and expresses a complete thought.
Overall, the sentence contains both a dependent clause and an independent clause.