The graph shows population variation in three wildlife species from 2011 to 2016 in North America and its coastal areas.

The given line graph shows the contrast of the population of three wildlife species in North America and its coastal areas between 2011 and 2016.

Overall

it can be clearly seen that the bears increased over the years in

number

while

the

number

of dolphins decreased dramatically in the same period.

According to

the graph, there was a significant rise in the figure of bears over the years. In 2011 they accounted for approximately 10 000 and in 2016 they reached the highest point , about 200 000.

However

, during the same period, the

number

of dolphins decreased rapidly.

For example

, there were 150 000 dolphins in 2011 but

this

number

leveled off in 2016. The

number

of whales stayed almost the same over the spent of 5 years with some fluctuations. Interestingly in any given period, the

number

of those three animals varied significantly except in 2012, when the amount of these animals in the population was similar, at around just above 50,000.