Crust:outer silicate solid crust
mantle:highly viscous
core:solid inner core
        
             
        
        
        
Answer:
wear a lab apron and safety goggles
 
        
             
        
        
        
Answer:
Explanation: 
The Euphrates-Tigris Basin is shared between Turkey, Syria and Iraq, with Iran comprising parts of the Tigris basin. Since the 1960s, unilateral irrigation plans altering the flows of the rivers, coupled with political tensions between the countries, have strained relations in the basin.