28. What is the general temperature
trend-during the time period shown on th9 graph?
What was the average temperature in 2000?
29. How would you expect
the graph to be different between 1700 and
1800, before the start of widespread
industrialization? ExPlain.

28 What is the general temperature trendduring the time period shown on th9 graph What was the average temperature in 2000 29 How would you expect the graph to class=