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Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data
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Look at the photo of the leaf. which term best describes this leaf?
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Biology, 22.06.2019 14:40
Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates
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If this data was placed in a bar graph, which statement would describe the graph?...
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