Answer:
I am what bring things together. Without me everything you see would be a total mass or debris everywhere.
You see a boat filled with people. It has not sunk but when you look again you don't see a single person on the boat. Why?
If a plane crashes on the border of US and Canada where do they bury the survivors?
I am full of holes but still holds water.
I am the home for feathery animals.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?