The chart below shows the percentage of five North American lakes covered in ice during two 20-year periods. Summarise the imformation by selecting and reporting the main features, and make comparisons where relevant.

The bar chart illustrates the proportion of icy layer covered over 5 major lakes ( superior,Michigan,Huron,Erie and Ontario) of North America for the last 4 decades from the year 1973 to 2012. Overall, a massive frosted lake was Erie in both periods as opposed to the Ontario. In addition to that the thickness of ice […]

The chart illustrates the proportion of five distinct North American lakes covered in ice over two 20 year periods. Overall, the percentage of ice cover in some lakes increased, while in others has only slight changes across the years. There was a steady decrease of proportion of ice cover in Superior lake, it dropped almost […]

The bar chart presents the ice cover percentage in five lakes located in northern America. The data is divided into two periods of 20 years, spanning from 1973-92 and 1992-2012. Overall, it can be seen that across the first two decades, ice coverage in all the lakes was higher than that in the second one. […]