Lose 2 oz of water in 1st minute....and loses 2 oz of water in 2nd minute. this is false because this will not equal 0.....it will equal -4 oz...because it is losing a total of 4 oz in 2 minutes....FALSE
the diver descends to the shipwreck.....and then returns to the surface....this one is true. Lets say the shipwreck is 20 ft below the surface....so he descends 20 ft.....thats -20....but then he ascends (comes back up) 20 ft......and -20 + 20 = 0....TRUE