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Where are dead zones found throughout the world?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
The depletion of which essential element is responsible for the Gulf of Mexico dead zone?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
Which process removes oxygen from water in hypoxic zones?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
What is hypoxia?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
Which of the following would help reduce the dead zone in the Gulf of Mexico?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
What factor determines the boundaries of watesheds?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
What boundary divides water between the Pacific and Atlantic Oceans in North America?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
What is the primary culprit behind the dead zone in the Gulf of Mexico?
a condition of oxygen depletion in water
Continental Divide
improved agricultural technologies that reduce nutrient inputs to rivers
decay of phytoplankton
agricultural chemicals
elevation
oxygen
in many places worldwide
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