But the use of chemicals in agriculture is increasingly becoming a concern for environmentalists across the world . Agricultural pollution has a caused a 'Dead Zone ' in the Gulf of Mexico . Globally the number of Dead Zones has doubled every decade since the 1960 's . The dead zone is where there are no fish, and it can be as small as one mile wide or as large as two miles across. Pesticide use rose 1000 percent in the Philippines between 1961 and 2005 .
Agricultural pollution has a caused a 'Dead Zone ' in the Gulf of Mexico . Globally the number of Dead Zones has doubled every decade since the 1960 's . The dead zone is where there are no fish, and it can be as small as one mile wide or as large as two miles across. Pesticide use rose 1000 percent in the Philippines between 1961 and 2005 .