Solve this riddle. I am the first on Earth, the second in Heaven, I appear two times in a week, you can only see me once in a year although I am in the middle of the sea, What am I? this riddle is for you.
You are the letter 'E'. The letter E is the first letter in the word 'earth', second letter in the word 'heaven', it appears twice in the word 'week' and once in the word 'year'. [ [ The letter 'E' is also the second letter in the word 'sea' making it's place the middle of the word as 'sea' is three letters long. ]