Why is the sea of Jordan called the Dead Sea?

The Red Sea and the Dead Sea are two separate bodies of water.

The Red Sea separates Africa from Asia. It is a large inlet of the Indian ocean.

The Dead Sea is a large saltwater lake bordering Israel, Jordan and the West Bank. It is made after the river Jordan flows from the Sea of Gallilae down the river and lands there. It gets it's name The Dead Sea because it is so salty nothing can live in it.