How to Use "disappearance" with Example Sentences

1. There is widespread speculation about what caused their disappearance .
2. This trend is symbolised by the disappearance of blacks .
3. It has also logged 35549 cases of forcible disappearance since 1981 .
4. Naturally , I had fantasies about her disappearance .
5. The rapid disappearance of sea ice leaves little time to lose .