1 In contrast, Preseedâs osmolality matches that of semen and thus does not harm or damage sperm.  Viscosity â The texture of many vaginal lubricants also negatively affect fertility by inhibiting the sperm from traveling up the vagina and through the cervix quickly and efficiently.
The Civil War in Sudan was caused by religious tensions between the North and the South. The two main religions are Sunni Muslim (North) and Christians or other traditional beliefs (south).
Political and Economic Causes of the American Civil War. 1  White House, residence and office of the President of USA. 2  On the one hand, political and economic reasons were mutually exclusive; on the other hand, these were overlapping.