The given bar graphs illustrates the amount of precipitation in mm in 12 different hot and dry grasslands in the year 1980 and 2000.
Overall, the level of precipitation seems to be fluctuating throughout the years. It can also be observed that the rainfall has decreased adversly in 2000 compared to that in 1980.
In 1980, the maximum amount of rainfall was seen in March reaching almost 350 mm which eventually starts declining in the following month until it reaches to around 150 mm in July. Then, the level starts to increase once again, reaching almost 250 mm in february.
On the other hand, the level of precipitation seems to be declining in the year 2000 with maximum rainfall being only 53 mm in the months July, August and November whereas it is minimum in March and April with 42 mm rainfall. Therefore, the precipitation level has decreased severely in 2000.