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For example , a gentleman in the 1940s observed that the burr seeds that stuck to his clothes and his dog 's fur had a tiny hook structure . On closer inspection , he discovered that the burrs ' gripping device was more reliable than a zipper . He eventually developed a company and produced the hook-and-loop fastener popularly known today as Velcro . Descriptive science and hypothesis-based science are in continuous dialogue . Biologists study the living world by posing questions about it and seeking science-based responses .
Please check all the words that can be used instead of the target word in the same context. Note that the morphology of the target (third person singular, past tense etc.) is considered to be applied to the candidate automatically in the process of paraphrasing.