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The scientific study of any aspect of the world uses the scientific method to acquire knowledge . To apply the scientific method , a researcher with a question about how or why something happens will propose a tentative explanation , called a hypothesis , to explain the phenomenon . A hypothesis is not just any explanation ; it should fit into the context of a scientific theory . A scientific theory is a broad explanation or group of explanations for some aspect of the natural world that is consistently supported by evidence over time . A theory is the best understanding that we have of that part of the natural world .
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.