Losing an average of 1050 mm of ice depth per year glaciers in the rocky mountains are given that the total ice-covered area of the canadian rockies is estimated at 4275 km, answer the following: 4. what is the total volume of glacier ice loss per year (in km2)? (1 mark) а. b. if on average the glaciers held in glacier ice in the rockies? (1 mark) only 120 m thick, what is the total volume of water are how many years before the rocky mountain glaciers dry up? assuming they continue to disappear at the same rate you calculated in (a) above. (1 mark) c. d. recalculate the renewable water usage for calgary if there were no longer glacial inputs. assume that 20% of the annual river flow there is derived from glacial runoff, and that the population increases by 25%. (2 marks)