http://pjsfk4xvekoc7wx4pteevp3q2wy7jmzlem7rvl74nx33zkdr4vyq.b32.i2p/minecraft/wiki/Renewable_resource
Running out of resources can be a bigger issue on Superflat worlds, where resources are less plentiful, in PvP maps, where one would like to obtain resources without having to conquer more land, or simply if the accessible portion of the map is limited. The listed fully renewable craftable items are items that can be crafted , smelted , or brewed using only renewable resources.