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H2 small in text questions. a. They did not test the drug on pregnant animals. H2 small in text questions. b. Measure the heights of all the seedlings. Control all the variables. Repeat readings will be similar so the experiment is reliable. - PowerPoint PPT Presentation
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c. Control all the variables. Repeat readings will be similar so the experiment is reliable. The investigation will answer the original question.
H2
ordered
catagoric
continuous
Research would be more reliable and valid if the same results were obtained by other scientists
(Also bias would be unlikely) H2 marks: 8