Biology
Biology, 18.07.2020 01:01, NabzDayer5214

When doing medical research with human subjects, which four limitations are unavoidable? 1- It’s often impossible to repeat trials on the same subjects. 2-Subjects may report an inaccurate medical history. 3-It can be difficult to control all possible variables. 4-It’s impossible to come up with testable scientific questions for human subjects. 5-There are ethical or privacy concerns to consider.

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