What number when divided in half becomes zero?

Move three sticks of the spiral below to form a square.

John was piloting a plane behind a car but was never able to overtake it. Why?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What has to be broken before you can use it?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.