what does this picture(rebus) riddle means ?

You bought me for dinner but never eat me. What am I?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

Buy me, smell me or deliver me, I do not change.

Who am I?

Can you name some countries which do not have the alphabet 'A' in them?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

You need to move three matchsticks to form three squares. Can you do it?

Which alphabet is a part of our body?

I am sure no one can have two things for dinner. what are they?