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Biology, 21.06.2019 20:00
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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Biology, 22.06.2019 02:30
Are the earth's ocean floor and continents the same age geologically? why or why not?
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Biology, 22.06.2019 05:00
Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation
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Biology, 22.06.2019 16:00
Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems
Answers: 1
How are simple tissue different from complex tissue in plants...
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