Izinto ezenzeka ngokwendalo

ukwenzeka kwendalo yinto eenzeka uyijongile kodwa ingenokwenziwa ngasandla samntu.  Imizekelo iquka: ukuvela kwelanga, imozulu, inkungu, iindudumo, inyikima, ukukhula nokuphila kwezidalwa eziphefumlayo,  ukubola, ukuhluma; ukutshintsha-tshintsha kwamalungu omzimba, ukuyaluza kwamaza, ukhukhuliseko; i-tidal flow, kunye neentlekele zasendalweni ezifana nokubetha kwe-electromagnetic pulses, i-volcanic eruptions, nokunyikima komhlaba.

Imithombo