Yes, up to a cap, which is 20 EPF or 80% damage reduction, where Feather Falling provides 3 EPF per level, so a combined total of 7 levels will reach it (or Feather Falling IV boots plus two other pieces, possibly including the boots, with Protection IV, which can be obtained in Survival without cheats or commands, will also provide the maximum amount of protection possible, since Protection itself also reduces fall damage).
If I have Feather Falling boots and Feather Falling elytra will the effects double?
Yes, up to a cap, which is 20 EPF or 80% damage reduction, where Feather Falling provides 3 EPF per level, so a combined total of 7 levels will reach it (or Feather Falling IV boots plus two other pieces, possibly including the boots, with Protection IV, which can be obtained in Survival without cheats or commands, will also provide the maximum amount of protection possible, since Protection itself also reduces fall damage).
TheMasterCaver's First World - possibly the most caved-out world in Minecraft history - includes world download.
TheMasterCaver's World - my own version of Minecraft largely based on my views of how the game should have evolved since 1.6.4.
Why do I still play in 1.6.4?
Thanks this was very helpful