The largest known dead zone occurred in the Gulf of Mexico in 2002, when runoff from the Mississippi River resulted in over 20,000 square kilometers of the Gulf area to become uninhabitable for oceanic life.
I think 'becoming' is more proper instead of 'to become'. I found the sentence above. If the sentence above is correct, I'd like to know why 'to become' is right. because to-infinitive is representing future?