Decode this picture on T-Shirt and tell what it says ?

I have an eye but still cannot see.

Who am I?

O_er_t_o_

Complete the missing letters of the given word.

Can you find the missing piece of the Porsche?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

You need to remove four matchsticks from the picture below and still need to maintain the following as in the original image.
1. 1st row contains 12 matchsticks
2. 2nd row contains 12 matchsticks
3. 1st column contains 12 matchsticks
4. 2nd column contains 12 matchsticks

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Imagine you are in a room with no windows or doors. How will you get out?

They are three errirs in this question. Can you find them?