Natural forces cause natural disasters, and human-made meddling causes human-made disasters. Natural disasters include floods, earthquakes, hurricanes, and droughts. Examples of human-made disasters include oil spills and explosions.
Even though these disasters are often abrupt and unpredictable, steps can be taken to ensure safety, which can diminish the unfavorable effects. You can also take careful precautions to prevent human-made disasters.
Although natural disasters are caused by nature, the effects can also be exacerbated by man and his interference. For instance, men who cut down trees and decreasing the sources of water in an area can lead to droughts and wildfire. Just as human activities influence natural disasters, human-made disasters can also be brought forth by nature.