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.
About the Nile River. The Nile River is the longest river in the world. It is over 4,100 miles long! The Nile is located in northwest Africa and flows through many different African countries including Egypt, Sudan, Ethiopia, Uganda, and Burundi.There are two major tributaries that feed the Nile, the White Nile and the Blue Nile.he Egyptians even built their calendar around the Nile River. They divided their calendar up into three seasons. Akhet, or inundation, was considered the first season and was the time of the flooding of the Nile. The other two seasons were Peret, the growing season, and Shemu, the harvest season.