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.
Convergent boundaries can cause mountain ranges like the Himalayas (continent-continent collision), subduction can create larger variety of rocks with MAFIC to FELSIC compositions. Divergent boundaries involve plates moving apart from each other and can cause mid-ocean ridges and the composition of the rocks is more MAFIC.