I am bread, I am paper. What am I?

I am sometimes big, sometimes small. In the autumn you see me fall. What am I?

I am layered, sometimes red. I am easy on your eyes. What am I?

I am the worst vegetable to have on a ship. What am I?

Take off my skin and I won't cry but you will. What am I?

I am green. I look like a tree. What am I?

I fall down but never break. What am I?