Complex sentence: In "Smallville", Clark's powers appear over time, as he is not aware of all of them at the start of the show; for instance, his heat vision and super breath do not develop until season two and six, respectively.
Split into simpler sentences: In "Smallville", Clark's powers appear over time. He is not aware of all of his powers at the start of the show; for instance, his heat vision and super breath do not develop until season two and six, respectively.