Me think me think...

Just to clarify, it better not be water or anything, because you can see it. YOU CAN SEE WATER dont disagree with that

"Water does indeed absorb some red light (that is why the ocean is blue), and water does indeed reflect some light (that is why there is glare from the sun on the water's surface), but for the most part we can think of water as a clear material because transmission/refraction dominates."

From online article

IK

Do u want the answer

Like seriously im not kidding this is dead so I might as well say it

Sure why not

Oxygen(sustains you)and the lack of it kills you. also, It is everywhere in the air on earth

O

OO

OOF