What facts does the author of "the great mississippi river" present in paragraphs 10 and 11 about the harmful effects farming is having on the river? a. "many of the farmers along the mississippi apply pesticides to their crops to prevent or eliminate harmful infestations of insects." b. "the algae decrease the amount of oxygen in the water, resulting in a 'dead zone' that is inhospitable to fish and other organisms." c. "the gulf of mexico dead zone is the largest in the world, covering up to 7,000 square miles of water." d. "the mississippi river is part of a huge watershed that drains streams and rivers over nearly half of the land area of the lower 48 states."