With the increasing prevalence of genetically modified seeds in agriculture, some critics have been concerned with the loss of diversity of open-pollinated plants. A small number of corporations now control a significant proportion of seeds used in agriculture today, with control being enhanced with "terminator seed" technologies that limit further propagation. While these seeds promise increasing crop yields and resistance to various environmental stresses, there is concern amongst some that the use of seeds adapted to narrow conditions may be more vulnerable to other stresses such as climate change. Proponents of these technologies point to safe use for over a decade. Nonetheless, a number of seed and plant organizations have emerged, both for-profit as well as charitable, with the goal of preserving open-pollinated, non-genetically modified organic seeds.
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