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The dangers of widespread DDT use are largely due to two main characteristics of DDT, its (Points : 5) 1. bioremediation and nonpersistence. 2.degradation and nonpersistence. 3.biomagnification and persistence. 4.bioremediation and persistence.
degradation and nonpersistence
Expert answered|kligarta|Points 0|
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Asked 11/23/2011 8:30:39 AM
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DDT quickly became widely used because it (Points : 5) 1. was toxic to many types of insects. 2.seemed nontoxic to humans. 3.was inexpensive. 4.All of the choices are correct.
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Updated 8/23/2012 10:35:37 AM
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The correct answer is #4 "All of the choices are correct"
Added 8/23/2012 10:35:37 AM
Because it does not affect the crop yield or nutritional value, a local grower advertises that in his orchard he does not use (Points : 5) 1. cosmetic spraying. 2.insurance spraying. 3.crop rotation. 4.natural predators
Weegy: Because it does not affect the crop yield or nutritional value, a local grower advertises that in his orchard he does not use 1. cosmetic spraying. (More)
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Asked 11/23/2011 8:23:53 AM
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To meet current USDA organic food standards, 100% organic certified foods may be (Points : 5) 1. genetically engineered. 2.irradiated. 3.fertilized with sewage sludge. 4.come from USDA-approved operation/farm.
Weegy: 4.come from USDA-approved operation/farm. (More)
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Asked 11/23/2011 8:24:36 AM
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