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).
Transcript: Top 5 Causes of the Civil War. The American Civil War cost of 620,000 American lives, which is roughly only 1% of the African lives lost to the slave trade. However, to say the Civil War was fought over slavery is an over simplified answer. Here are the top five causes of the civil war.