Ice melts when heated up. But I solidify when I’m heated up. What am I?

I look flat, but I am deep,
Hidden realms I shelter.
Lives I take, but 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?

I start with the letter “e”, I end with the letter “e”. I contain only one letter, yet I am not the letter “e”! What am I?

I have a big mouth, and I am also quite loud! I am NOT  gossip, but I do get involved with everyone’s dirty business.

I’m like a doll, but I’m not for playing;
I stand up straight, but if it’s windy I may be laying;
I work outside both day and night, in sunshine or in rain.
What am I?

Can you combine plus signs and five 2’s to get 28? Can you combine plus signs and eight 8’s to get 1,000?

I have cities but no houses, forests but no trees, and rivers but no water. I show the world but hold none of its substance. What am I?

Divide 30 by half and add 10. What do you get?

Two men are in a desert. They both have backpacks on. One of the men is dead. The man who is alive has his backpack open, and the man who is dead has his backpack closed. What is in the dead man’s backpack?

A prisoner is told: “If you tell a lie, we will hang you, and if you tell the truth, we will shoot you.”
What did the prisoner say to save himself?