I have branches, but no fruit, trunk or leaves. What am I?

Why is the Hole below a Lock?

What has a ring but no finger?

What is the centre of gravity?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

What breaks yet never falls, and what falls yet never breaks?

How can a man go eight days without sleep?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Aaron, Brad, Christopher, Danny and Elvis decided to play a game of tiddlywinks. In this game they decided that one win will get 1 point for winning, 0 for losing and 1/2 in case of a tie.

They finished the game in alphabetical order and it was found that the scores were different for each person.

Based on the following two statements, can you find out the result of the individual games?
Brad: No one could finish like me, without a loss.
Elvis: No one played worse than me, I finished without a single win.