Flu-like Illness. One of the earliest HIV symptoms in men is a severe 'flu-like' illness, known as the 'seroconversion illness.'. Seroconversion is the point in time where a person's blood is converted from being HIV negative to HIV positive, by the production of antibodies.
Erosion causes the surface of mountains to be younger than the rocks that form the mountains themselves. Glacial processes produce characteristic landforms, such as pyramidal peaks, knife-edge arÃªtes, and bowl-shaped cirques that can contain lakes.
Erosion will wear away mountains after a long period of time. This will cause mountains to decrease in size and height. Cliffs, beaches and waterfalls can be formed in this waâ¦y through erosion by water. Also, hills can get more rounded after erosion. Soil erosion through deforestation can cause a large area of land previously covered with greenery to disappear and resulting in water pollution as well. Glaciers also contribute by eroding away walls of canyons.