The given line graph illustrates how many wild animals in North America, including bears, dolphins and whales over a 5 year period, starting from 2017.
Overall, it can be observed that the number of dolphins was highest initially, but in the end they became nearly extinct, the opposite was true for the figures for bears.
In the beginning, there were about 10 bears, much lower than that of whales and dolphins was around 80 and 150. In 2019, the population of bears increased dramatically by about 100 while the number of dolphins decreased by about 120. The numbers of populations for bears and whales were relatively similar from 2018 to 2019.
At the end of the period, whales and dolphins showed a downward trend with the total falling below 30. The bear population in 2022 was nearly 180, double the figure of that in 2019. During the same period, the number of dolphins slightly dropped over the past 3 years and reached the bottom in 2022.
