Question

Which one brings a sudden change in the environment?

Answer 1

The sudden environmental change brings by the various human influences and natural ecological process. That carry the environmental disturbences. some natural human made impact that causes envuronmental changes is deforestation, Pollution. And some natural is heavy rain, tsunami, and other natural desasters

Answer 2

Talking about a sudden change in the environment, factors like formation of river, formation of mountain or the growth of a plant cannot be considered in the same magnitude.

All these phenomenon being time consuming and taking place over a prolonged period of time, we are left with rainfall, which indeed causes a sudden change in the environment.