The more you take me, the more you leave me behind.
Who Am I?

How can you take 2 from 5 and leave 4?

What has one letter and starts with an E?

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

During which month do people sleep the least?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

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

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

What is the Surname of Barbie Doll?