Once a person is affected by a dengue virus, the platelets can no longer âactivateâ itself. So whenever there is damage, the platelets cannot form the mesh structure and the blood flows out of the vessel. As blood flows out, so does the platelets. This causes the platelet count to fall drastically. The blood that flows out causes internal. and external bleeding and leads to a haemorrhage.
1 Today, the Aswan Dam keeps the Nile from flooding modern cities. 2  The Ancient Egyptians called the Nile the Aur, which means black and comes from the black soil. 3  The Egyptians measured the height of the annual flood using a Nilometer.
The Nile is actually formed from two tributaries-the White Nile and the Blue Nile. The White Nile starts at Lake Victoria, in Uganda, the Blue Nile starts at Lake Tana in Ethiopia. They meet at Khartoum in Sudan.he Nile is actually formed from two tributaries-the White Nile and the Blue Nile. The White Nile starts at Lake Victoria, in Uganda, the Blue Nile starts at Lake Tana in Ethiopia. They meet at Khartoum in Sudan.