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.
The people of Egypt used the regular event of the River Nile flood to their advantage. Until 1970, the Nile had flooded every Spring as the mountain snows melted. This flooding of the flat land (floodplains) alongside the river enriched the soils leaving behind rich silt in which crops could be grown.
Answers. Best Answer: The Egyptian flood in the Nile: Rains in Africa, especially rains from the Ethiopian Highlands, and melting snow caused the Nile River to flood .The Ancient Egyptians used an object called a nilometer to record how high the Nile was during the year.he rains would swell the different tributaries and other rivers that joined to become the Nile River. End of the flooding In 1970, with the completion of the High Dam at Aswan, the annual flooding cycle in Egypt came to an end.