There are four basic functions of soil as a medium for plant growth:
, water, oxygen and nutri...
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Biology, 21.06.2019 20:00, zaratayyibah
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 07:30, alejandra216
Ture or false evidence for evolution includes millions of fossils
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Biology, 22.06.2019 11:20, sipstick971
Scientific evidence is most likely to be consistent if it is based on data from
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