What is a dead zone?

Question

Not meaning cell phones!

Answer 1

I believe that you are refering to the area of the Gulf of Mexico that forms every summer.  Agricultural runoff from the Mississippi river causes algal blooms in the gulf as the algae die and sink into deeper water bacteria consume it and use up all of the oxygen in the water; without oxygen all of the fish leave or die and you end up with a dead zone.

Answer 2

Dead zones are hypoxic (low-oxygen) areas in the world's oceans, the observed incidences of which have been increasing since oceanographers began noting them in the 1970s. The term could as well apply to the identical phenomenon in large lakes. In March 2004, when the recently-established UN Environment Programme published its first Global Environment Outlook Year Book (GEO Year Book 2003) it reported 146 dead zones in the world oceans where marine life could not be supported due to depleted oxygen levels. Some of these were as small as a square kilometre, but the largest dead zone covered 70,000 square kilometres.

Answer 3

The Obama democrates

Answer 4

the center of the earth

Answer 5

Are you referring to the place where you are in right after you die ....the only "dead zone " that I really know  is when you can't pick up cell coverage .