Ososayensi bathi ukufa kwabantu abaningi manje sekwenzeka njalo futhi ngezinga elikhulu kunanini ngaphambili. Baphikisa ngokuthi ulwandle olufudumele nokuncika kakhulu kwezobuchwepheshe kunomthelela ekwandeni kokufa. Imboni yezokudoba ibilokhu iphikisana isikhathi eside - nokukhathazeka okukhulu ngezifo phakathi kwezinhlanzi, ukuphunyuka endle kanye nomthelela jikelele wezemvelo wokuzikhulisa emakhejini.