Before Balboa discovered the Pacific Ocean, which was the largest ocean before that?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

How many letters are in the alphabet?

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

If eleven plus two equals one, what does nine plus five equal?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What is the riddle which can be asked all day with a different correct answer each time.

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?