I am essential to life on earth! I am split into thirds. Two thirds are the same. One of the thirds is 8. The other two are 1 each. What am I?

Answer: Water

More What am I ? with answers

More What am I ?

I am everyone, yet no-one, I can be anywhere or nowhere, when the lights go out I disappear and when I face myself we multiply. What am I?
I am everywhere but cannot be seen, captured or held, only heard. What am I?
I am everywhere. I am inside you. I surround you. I can be seen by you. I can kill you. Yet you play in me. What am I?
I am everywhere. Nothing can compare. Run and hide and I will still be there Because everything is mine to share. No need to seek me out, Though, you may just run out. What am I?
I am expelled from you orally with a sound. What am I?
I am flora, not fauna. I am foliage, not trees. I am shrubbery, not grass. What am I?
I am found in the day, but more often at night. Whenever you fall, I may be deep or light.
I am found in the sea and on land but I do not walk or swim. I travel by foot but I am toeless. No matter where I go, I'm never far from home. What am I?
I am free the first time and second time, but the third time is going to cost you money. What am I?
I am full of wisdom and knowledge. I get what you want in a blink of an eye. I am known to man as full of endless wisdom. What am I?
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
I am gold and can be black and white, I’m a symbol for a nation, when freedom took flight. What am I?