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Biology, 15.07.2019 00:30 lilwolves1013osqd2o

Which of these statements best describes a scientific theory? (2 points) select one: a. it is a description of an observation which does not change over time. b. it is a description of an observation after research over a period of time. c. it is an explanation for an observation which is not based on data. d. it is an explanation for an observation after several valid experiments.

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