I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

I am white when I am dirty, and black when I am clean. What am I?

What have one eye but still cannot see?

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.

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

If six children and two dogs were under an umbrella, how come none of them got wet?

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