Make a list of as many different types of events (disturbances) that you think can cause ecosystems to change?

Here before i heard about tsunami, earth quake, floods and more. It is common thing happened in the every planet. But after we dominated what is disturbance we heard are breathing polluted air, drinking chemical mixed water, foods are not naturally boiled, chemical products we used frequently as a cosmetics, drugs, etc. We cross the level of using the nature for example we allot the place for other animals living and so on. So i think this is the ecosystems changes.