Because it is dispersal by water,so when it in the water,it floats so it does have a fibrous husk. My answer is not very good but for the rest who really want to know,the answer is it dispersal by water so it has fibrous husk,the fibrous husk inside keep water and I think there air so it can float.......thanks:).
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.