If it is part of the HUD then it is called your "Hotbar" Good question though.
Yes. Any mob can be killed without weapons; weapons just deal more damage, and therefore, kill the mob quicker. Keep whacking, you'll kill it eventually.
There is no such thing as steel. Iron is fairly abundant underground, just keep digging.
People Keep Nuclear Weapons As A Sense Of Power.
The thing that hangs over any window to keep the sun out is called an awning.
Lions can only be found on Minecraft if Mo' Creatures Mod is used. If you would like to keep your lions, keep the Mo' Creatures Mod.
I cannot answer this question.
One of the Minecraft files that are required to start it may be corrupted. Uninstall and reinstall Minecraft and see if that fixes it.
to keep the weapons from being broken by cold
it does not do that
You can keep the weapons you collect in the level but only if you complete the level, hope that helps.
They said that minecraft would never be a "finished product", and that adding more stuff periodically would keep users interested in the game.
/gamemode keepInventory true