The given line graph illustrates the distribution of three wild animals, including bears, dolphins, and whales, in both landmasses and coastal areas of North America from 2011 to 2016.
Overall, it is well-distributed in the diagram that during the 5 years the number of bears experienced an upward trend, while the populations of the other two species witnessed decreases.
Between 2011 and 2012, starting at the smallest figure, the population of bears significantly rose from approximately 10 thousand to over 50 thousand individuals, which was as much as the lowest number of whales in 2012. However, the figures for dolphins fell from 150,000 to roughly 75,000 in the same period. During the following year, the distributions of bears and whales rocketed to around 95 thousand and exactly 100 thousand creatures, respectively, whereas the dolphins’ population continued to decrease dramatically to over 25,000 individuals. From 2013 to 2015, whereas the number of bears living in North America increased to almost 150,000, both whales’ and dolphins’ saw gradual deductions to approximately 95,000 and 6,000, respectively. Until 2016, the population of bears peaked at almost 200 thousand creatures while dolphins, unfortunately, became extinct after a slight decline, and the figure for whales witnessed a moderate downward trend to nearly 75,000.