Q: In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.
Critics of this policy focus in three poins ; first , Yellowstone fires scorched a large area of land therefore a lot of plant species were lost . 
A:
Critics of this policy focus on three points ; first , Yellowstone fires scorched a large area of land , and a lot of plant species were lost . 