Pit Bull, left, and Enrique Iglesias perform in the halftime show of an NFL football game between the Miami Dolphins and Dallas Cowboys, Thursday, Nov. 24, 2011, in Arlington, Texas.
Dead zone may refer to: Dead zone (cell phone) , an area where cell phones cannot transmit to a nearby cell site Dead zone (ecology) , low-oxygen areas in the world's oceans Dead zone (military) , blindspots in a fortification's visual field which were relatively sheltered from defending fire Films Dragon Ball Z: Dead Zone , the first of thirteen Dragon Ball Z films Whisper of Dead Zone, the translated English title of the 2012 Turkish film ÃlÃ¼ BÃ¶lgeden FÄ±sÄ±ltÄ±lar .
Shrimp trawlers first reported a 'dead zone' in the Gulf of Mexico in 1950, but it was not until 1970 when the size of the hypoxic zone had increased that scientists began to investigate. [28] After 1950, the conversion of forests and wetlands for agricultural and urban developments accelerated .