Just enough fruit, vegetables, live, breathe the oxygen. Fermentation does not occur during storage. Ingress of water vapour can enough frosted water inside the packaging and absorbs the gas ethylene oxide from the packaging.
Just enough to have fresh breath of oxygen. Not ferment well stocked. Permeation of water vapor is not sufficient to cover the interior packaging. And the adsorption of ethylene from its packaging.
Just enough to keep fruits and vegetables fresh breathing and oxygen. No fermentation throughout the storage. The permeability of the water vapor enough not to fog water in the packaging. And adsorption of ethylene gas out of the packaging .