| http://www.w3.org/ns/prov#value | - The disorder, which causes adult bees to abandon their hives and fly off to die, is likely a combination of many causes, including parasites, viruses, bacteria, poor nutrition and pesticides, experts say.it is just gotten so much worse in the past four years, said Jeff Pettis, research leader of the Department of Agriculture's Bee Research Laboratory in Beltsville, Md.
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