Examine your data table to determine the time period when
each of the fossils on the left lived.
! Click and drag the fossil icons to
the appropriate time periods on the Geologic Time Scale chart.
Examine your completed chart to look for patterns of how life
has changed, then answer question 5 below.
If you did not
record a time period for any of the fossils, check the sites in Step
4 again, or check page 668 in your textbook to place them on the chart.
5. How has life changed over geologic time? Describe
the patterns that you see.