Final answer:
To calculate the annual precipitation on a climate graph, you need to look at the average rainfall for each month of the year and add up the values. Climate graphs also typically include a line graph showing the average temperature.
Step-by-step explanation:
To calculate the annual precipitation on a climate graph, you need to look at the average rainfall for each month of the year. These values are typically given in millimeters or inches. To find the annual precipitation, you simply add up the monthly values for the entire year. For example, if January has an average rainfall of 20 mm, February has 30 mm, and so on, you would add up all these values to get the total annual precipitation. It's important to note that climate graphs also typically include a line graph showing the average temperature alongside the bar graph for precipitation.