Erosion and volcanic eruptions
Earthquakes it occur because of they occur when their used tectonic plates it shifted to suddenly. Hope it helped you, and have a great day.
-Charlie
I am i have a 103 (yes i do my extra credit)
An occluded front forms when two cold air masses meet and push warmer air up, making the temperature drop and usually bring strong rains and wind.
Avoid carcinogens (like smoking residues..etc), eat healthy and sleep well in order to maintain a strong immune system