THE OZONE LAYER IS THE LAYER THAT TRAPS HEAT. IT LETS SOME HEAT GO THROUGH TO HEAT THE EARTH BUT IT TRAPS OTHER RAYS SO THAT THE EARTH DOESN'T GET OVER HEATED.
OUR DESIGN ACTUALLY WORKED WELL. OUR STARTING MASS WAS 12.4 GRAMS AND OUR ENDING MASS WAS11.3 GRAMS... WE COULD MAKE OUR STRUCTURE BETTER BY COVERING THE OPENINGS AROUND THE DOOR. THE AMOUNT OF MONEY THAT WE WERE GIVEN LIMITED US BECAUSE WE COULD HAVE BOUGHT A WHOLE LOT MORE MATERIALS...