Best medium riddles with simple answers

I look taller when I am young. But as I get old, I become shorter and shorter. What Am I?

What starts with a 't' ends with a 't' and is full of 't' ?

What man cannot live inside a house?

Never trust this fellow’s grin. His teeth are sharp and course, his blood’s as cold as icicles, and he’ll show no remorse! What is it?

I am only useful when I am full, yet I am always full of holes. What am I?

I am a fruit. Remove my first letter, it's a crime. Remove my first and last letter, it's a kind of music. What do you think am I?

How do you make an egg laugh?

There was a plane crash every single person died. Who survived?

Poke your fingers in my eyes and I will open wide my jaws. Linen cloth, quills, or paper, I will devour them all. What am I?

What do polar bears eat for lunch?