Problem: You take two balloon rides to view campus from above, rising each time from the same spot on the ground (where the pressure is 1000 mb both times) to a height of 1500 meters. Being an ardent meteorology student, you take your trusty barometer along with you. At 1500 meters, the barometer reads 845 mb on the first trip, but 855 mb on the second trip. You deduce that ________. Need Assignment Help? Question options: the average temperature of the air between 1000 mb and 850 mb was higher on the first trip than on the second the height of the 850 mb surface is lower on the first trip than on the second trip the height of the 850-mb surface is higher on the first trip than on the second trip Both a and b are correct. Both a and c are correct.