User: 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?
Weegy: You are the alphabet "E".. Because you see, "E" is the first alphabet of the word "Earth" (E)arth, and the second in "Heaven" H(E)aven.. In "Week" the alphabet comes twice, W(EE)k.. And once in the word "Year" Y(E)ar.. [ Do you see it now? I really hope this you understood. Thank you! ]