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Denna sidan visar ordspråk som liknar "There's a big difference between genetically modified crop plants and trees, in the sense that trees are perennial and live a long time. Will tree roots pump out a genetically modified toxin for years and years? And what happens if you have insect-resistant trees spreading genes to relatives that live outside, in unmanaged ecosystems? There are many ecological issues with [modified] trees that need to be carefully studied.".