waterproof
Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air.
"Edgar's tent was impervious to rain water, so he stayed nice and dry inside it".
Cork can absorb water.
Cork insulates, is water resistant and floats in water.
No. It may soften the cork but if anything hot water will make the cork expand.
A cork is less denser than water because cork is floating on water so it will have less density than water
An impervious rock is one that does not allow water to flow through it. It has no air spaces and has no way of storing water at all.
because cork is less dense than water
i am not a master in biology but something i know that in plants the bark cells are impervious to gases and water as they have a chemical called suberin on their walls.
Cuticle being impervious to water prevents water loss
Cork does float in water because it's less dense than water.