The graph shows the change in the duration of the sea-ice melt season in attic from 1980 to 2015. The blue band represents the time between when ice began to melt and when it froze each year. Which conclusion can you draw from the graph?

The graph shows the change in the duration of the seaice melt season in attic from 1980 to 2015 The blue band represents the time between when ice began to melt class=