Which is the correct shadow of the bird?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

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

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

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

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