How many times can you subtract the number two from the number fifty?

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?

Can you find the missing piece of the Porsche?

I am the fastest animal but cannot climb the tree. What am I?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

Before Mount Everest was discovered, what was the highest mountain in the world?

How can you take 2 from 5 and leave 4?

What has one letter and starts with an E?

It is an eleven letter word.
The first, second, third and fourth letters form a banquet's name.
The fifth, sixth and seventh letters form a car's name.
The eighth, ninth, tenth and eleventh letters form a mode of transport.

Can you identify what word it is?