The main cause of segregation was long-standing racism on the part of white people.
The Earth's tilt on its axis.
External causes bacteria, viruses, fungi. Or internal causes such as some hereditary factor.
For some creatures, possibly and even probably. The dinosaurs became extinct before any humans got involved in all this debate. So, no.
The noramal main cause of a tsunnami is earhtqukes yet however one can ocurr when any amount of force is aplyed on to the sea e.g a iland falling into the sea. The force of the object has to be...