Chữa bài IELTS Task 1

The chart below shows information about animals and rainfall at Nboro Nature Reserve. Summarize the information by selecting and reporting the main feature and make comparisons where relevant.

The given bar charts illustrate the number of animals, namely zebras and buffalos, as well as the yearly rainfall in an area called Nboro Nature Reserve from 2005 to 2011.
Overall, according to the first bar chart, the figure for zebras and buffalos increased during the 6-year period. Besides, the other chart indicates that the annual rainfall also rose over the period.
As can be seen the first chart, in 2005 the number of zebras was nearly 50, compared to the slight lower figure for buffalos, exactly 40. These figures climbed significantly to approximately 80 for both animals in 2007. However, in 2009 while the number of zebras declined slowly to about 70, that of buffalos increased considerably to roughly 120. In 2001 both animals saw a rise in their figures to almost 80 and nearly 120 for zebras and buffalos, respectively.
Moving on to the second chart, in 2005 roughly 600mm was the yearly rainfall in the reserve. This figure rose dramatically to almost 1000mm in 2007. By contrast, we saw a rapid decrease to approximately 700mm in 2009, but this number increased again considerably to precisely 1200mm in 2011.