Channel proteins help large molecules pass through the cell membrane.
I Believe the answer is DNA so answer choice C
Electricity is caused by moving particles that have either a negative or postivite charge
It's a way of protecting the trees, and making sure they survive the winter and beyond. Leaves die during the winter months. If those dead leaves stayed on the trees, and new ones wouldn't grow in their place, the tree would have no way of making food for themselves.
Hope it helps. ☺
