The answer is water. Duh!
Pun 1: Need an ark? I Noah guy?
Pun 2: I was going to tell you a chemistry joke, Never mind, I won't get a reaction.
Pun 3: Have you ever tried to eat a clock? It's time consuming!
Pun 4: My friend tried to annoy me with bird jokes, then I realized, toucan play that game.
Riddle 2:
What comes twice in a moment,
Once in a minute,
But never in a century?