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.
The mountain ranges are created because of those crumpling plates. The Indian subcontinent âcrashedâ into Asia 25 million years ago and created the Himalayan mountain range. In fact, the Himalayans are still growing! The next way that mountains are formed is along fault lines.