Identify the text structure of the following passage. "Earthquakes happen all over the world in areas called seismic zones. Seismic zones occur where the plates of crust covering the Earth's
surface meet each other. Inside the Earth, the mantle is always moving, which in turn moves the plates. These plates push against each other.
building up tension between them. When the tension between plates becomes too great, they grind against each other, causing the Earth's
surface to tremble and shake." - Robert Neumiller, Planet Earth, Creative Discoveries, 2001.