The National Geographic Magazine, Volume 201National Geographic Society., 2002 - Geography |
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Page 37
... crops can help feed the developing world , where poor farming conditions and low - tech practices leave yields far below the potential . Fewer Pesticides For one crop , cotton , built - in Bt insecticide has cut spraying dramatically ...
... crops can help feed the developing world , where poor farming conditions and low - tech practices leave yields far below the potential . Fewer Pesticides For one crop , cotton , built - in Bt insecticide has cut spraying dramatically ...
Page 45
... crops are being developed too quickly and released on millions of acres of farmland before they've been adequately tested for their possible long- term ecological impact . Advocates of genetically engineered crops argue that the plants ...
... crops are being developed too quickly and released on millions of acres of farmland before they've been adequately tested for their possible long- term ecological impact . Advocates of genetically engineered crops argue that the plants ...
Page 47
... crops may be gene flow . Could transgenes that confer resistance to insects , disease , or harsh growing conditions give weeds a competitive advantage , allowing them to grow rampantly ? " Genes flow from crops to weeds all the time ...
... crops may be gene flow . Could transgenes that confer resistance to insects , disease , or harsh growing conditions give weeds a competitive advantage , allowing them to grow rampantly ? " Genes flow from crops to weeds all the time ...
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