"severe weather conditions" are the only things than can be reasonably well predicted with the help of science. Of course the accuracy of these predictions varies greatly.
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The development of seeds are considered to one of the most important in the evolution of land plants especially the spore-bearing vascular plants. The seeds will serve as the alternative means of dispersal for reproduction purposes especially in areas where there is no water.
Positive results will come as it changes local biodiversity. Hope this helps.
