What does does this rebus picture means ?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

How can one talk without saying a single word?

Can you name an animal whose killing cannot be performed without spilling your own blood?

I have no life, but I can die. What am I?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

A worker is to perform work for you for seven straight days. In return for his work, you will pay him 1/7th of a bar of gold per day. The worker requires a daily payment of 1/7th of the bar of gold. What and where are the fewest number of cuts to the bar of gold that will allow you to pay him 1/7th each day?