is close to 0 thermal sources and then nial also but in in the quirked way when the size of the dam and the filling scenarios of the have big impact on the stability of the night is not the only about how much egypt did deserve to get water it's about how much water we need to let flow to keep the night ecosystem of life what kind of environmental damage do you foresee by the building this down and what trouble she's the 1st of all we have to see that the night over as it have 100 islands about 100 island 22 of them in egypt have 800 types of fishes believe in it. so all of these all of this biodiversity all of all of the vegetation like. up it was for instance that very sensitive to the change in the flow so once you start to build such a big change the flow of the night the flow rate you change the amount of fall to flowing all of this by the verses to start to suffer and then you have the domino effect you can one type of fishes and you can other you'd change one type of vegetation and other vegetation will flow and you can the vegetation the bird migration will flow you change the b