Ice albedo feedback interact

Allow you to interact with how the ice albedo changes with temperature.
T is in degrees Celsius and A and B are from derived from atmospheric  conditions to be A = 218 Wm^2 and B = 1.90 W/m^2C
The value of C to be 10^7J/2.0.


Changed the plots to use graphics grids

moved the plot size in to respective plot command.