Which of the following is true regarding the hypoxic zone (Dead Zone)off the coast of Louisiana?
A)during large floods the size of the hypoxic zone shrinks.
B)agricultural areas use only the amount of fertilizer needed.
C)The agricultural,feedlot,and fertilizer industries deny any connection between their nutrient runoff and the hypoxic zone.
D)The hypoxic zone is deadly to marine organisms due to its toxically high oxygen levels.
E)Hypoxic zones have not existed elsewhere.

Question

Quizplus · Accepted Answer

There is significant evidence linking nutrient runoff from agricultural and feedlot industries to the formation of the hypoxic zone, but the industries deny the connection. A is incorrect because floods can actually increase the size of the hypoxic zone by carrying more nutrients from inland areas into the Gulf of Mexico. B is incorrect because many agricultural areas still use excessive amounts of fertilizer. D is incorrect because hypoxic zones have dangerously low levels of oxygen, not high levels. E is incorrect because hypoxic zones have been observed in other areas, including the Chesapeake Bay and the Baltic Sea.

Which of the Following Is True Regarding the Hypoxic Zone