Science, asked by irenechristantie, 12 hours ago

5.4 An experiment was carried out to find out how nicotine affects the production of sperm cells in rats. 40 male rats were divided into three groups. One group was given no nicotine, another group was given a low dose of nicotine each day and the third group was given a high daily dose of nicotine. This continued for 30 days. The researchers then studied the rats' sperm cells, and counted how many sperm cells were not normal. The table shows their results. none low dose dosage of nicotine percentage of abnormal sperm cells high dose
32.89 6.87 19.88 a
a Draw a bar chart on graph paper, to show these results.
b Write a conclusion that the researchers can make from their results.
c Suggest why the researchers gave no nicotine to one group of rats.
d Suggest two variables that the researchers should have kept the same in their experiment.​

Answers

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1

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