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She has made contributions not only to paleoethnobotany but also has published substantial work on paleoecology , including using archaeobotanical remains to investigate plant taxa extinctions , seasonality , and issues of wild food sustainability . In this case , the molecular farming product will only be formed when the harvested plant material is removed to a processing facility and exposed to a chemical or environmental trigger that permits expression of the transgene . People here are just setting out plants , and the gardens look very backward , which I attribute to negligence , as I am certain that the weather was warm enough long before they commenced planting . Seedling plants , even from seeds of tasty plants , vary widely in their culiary intensity , so individual cultivar selection is really important .