Haaretz Service: Palestinians backtrack, support Dead Sea for '7 wonders'
Talkback
Title:# 7 "teacher"
Name:Axel
City: State: Germany
"The boundry between Israel & Jordan runs in the middle of the sea."

REALLY? WOW!!!

But leaving that wonderful piece of geographical learning aside:

The decreasing level of the Dead Sea is due to the decreasing influx of river Jordan water. And that is due to the usage of River Jordan water by Israel.

It`s so simple, even teachers can understand it.