If you say my name, I will no longer exist. What am I?

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

Can you spot what's wrong with the following sentence?

PETER WAS ANGRY AT
HIMSELF BECAUSE HE
ACCIDENTALLY LEFT THE
THE KEYS TO HIS CAR
AT HIS FRIEND'S HOUSE.

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Which is the correct shadow of the bird?

I know a nine-letter word having only one vowel.
Do you ?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

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

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?