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Pyrethroids are synthetic chemical compounds designed to mimic the insecticidal activity of natural pyrethrins, which are derived from the flowers of Chrysanthemum species. Unlike pyrethrins, which are naturally occurring and degrade rapidly under sunlight and environmental conditions, pyrethroids are chemically modified to be more stable, longer-lasting, and more potent against a broad spectrum of insects. This increased stability allows pyrethroids to be widely _____ ____ __________ _____ __________ _____ _________ ________ _________ ___ ______.
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