What Am I Riddles

Question: The more i am present, the less you can see me. Who am i?

Question: I cannot speak but i tell everything.Im not a tree but i have a leaves. I have hinges but neither not a door nor a window. Who am i?

Question: i can fill up the entire room and still not take up any space. Who am i?

Question: My memory is good, nay, more like perfect Yet I only remember two things.

Question: You see us everyday, but you never see us together. We appear everywhere but never are we together at the same place. Who are we?