Riddle #1147

While I am in air, I am not in oxygen. I am also in water, but not in hydrogen. I am necessary in all animals, but you won't find me in the zoo. Look in all brains and you'll find me there too. What am I?

What am I?

I’m the end of the colourful rainbow. What am I?

Forward I am heavy, but backward I am not. What am I?

Armored but not a knight, snapping but not a twig, and always at home, even on the move. What am I?

If you throw me out the window, I'll leave a grieving wife. Bring me back, but through the door, You'll see someone giving life. What am I?

I am the place where the earth meets the sky and the water kisses the land. I disappear twice a day, only to return again. What am I?

What kinds of stones are never found in the ocean?

What was the biggest island in the world before the discovery of Greenland by viking Erik the Red?

The Pope, Beyonce, POTUS, and Bill Gates are on the same plane. There are only 3 parachutes left for the 4 of them. POTUS says: "As the President, I think I should have the right to have a parachute, because I rule millions of people in the greatest nation of all." Beyonce says: "As one of the greatest singers of all-time, I think I should deserve to be safe. I bring tears and laughter to millions of people, and I'm an important contributor to pop music." Bill Gates says: "As one of the richest successful company owners, I think I should live because I'm on top of the economics cycle, creating jobs and incomes for millions of people. I am a wealthy and intelligent man." Finally, the Pope says: "I'm an old, religious man. I lived a life that's full, I helped millions of people find their way through God, I'm ready to let go of a parachute and to face my fate." Which one of them will abandon the parachute and die?

What does a man have that no other men has?