科學(xué)60秒:勤勞小蜜蜂,如此命苦
Given that recent history, USDA entomologist Jeff Pettis characterized this as quote “___2___” given that quote "the problem does not appear to be getting worse."
Of course, the problem has been getting worse since at least the 1980s, when parasitic mites ___3___ the U.S. Our friend Apis mellifera has never recovered. Now so-called "Colony Collapse Disorder" or CCD continues to kill bees--who provide some $15-billion worth of economic good via pollination.
To really solve the problem would require much more than solving the mystery of CCD. It would require a ___4___ from the widespread use of pesticides that unintentionally impact bees and a ___4___ from the large-scale agriculture that forces them to ___5___ a single type of flower rather than their usual diverse diet. Plus, there's the globalization that allows bee-killing disorders to spread rapidly and easily. What a buzz kill.
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