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).
Causes of the American Civil War Essay - Causes of the American Civil War The American Civil War was a military conflict between the United States of America (the Union), and 11 secessionist Southern states, organized as the Confederate States of America (the Confederacy).