O_er_t_o_

Complete the missing letters of the given word.

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

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

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Which point will the car reach to go out?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Which Burger Is Different in below image?

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.

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?