The desire to chew on ice may occur for reasons other than a mineral deficiency. Some people may develop pica related to a mental health or emotional problem, such as obsessive-compulsive disorder or stress. Other times, pica occurs because of pregnancy and in people with developmental disabilities.
Why Japan has so Many Earthquakes. Japan is located along the Pacific “ring of fire”, on the edges of several continental and oceanic tectonic plates. This is an area of high seismic and volcanic activity from New Zealand, up through Japan, across to Alaska, and down the west coasts of North and South America.