1 Inflammation of the gingiva, bone loss, and increased gingival recession may progress slower than with other forms of periodontitis.  Periodontitis Associated with Systemic Diseases - Systemic diseases, such as heart disease, diabetes, and certain forms of arthritis, may have a correlation with periodontitis.
Main Content. An earthquake is ground shaking caused by a sudden movement of rock in the earthâs crust. Such movements occur along faults, which are thin zones of crushed rock separating blocks of crust.
Best Answer: Earthquakes mostly occur in places where there is a Fault Line. Plates under the Earth's surface move and push against each other. Some of these places are: * South America * North America * Australia * Africa * Philippines * India * Caribbean, etc.