Page 22 - 新思维科学活动用书8 样章
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1.5  Blood



                         The table shows their results.


                                                                    Mean red blood cell count
                            Time in days
                                                 Rats at sea level                 Rats at high altitude

                                  1                    6.5                                  6.5

                                  3                    7.0                                  8.5
                                  7                    6.5                                 10.0

                                  15                   6.5                                 10.5

                                  20                   7.0                                 11.5

                     2  On the grid, construct line graphs to show these results. Draw two lines on the same pair of
                         axes.

                         Take care with the scale on the horizontal axis.

























































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