A. list 3 signs that a chemical reaction occurred. b. give an example of a reaction that uses one of the signs you gave for part a.

A. gas change, color change, and temperature change.

B. color change; one day you wore a ring that wasn't stainless steel in the shower, so the following morning it was rusted.

That result from subduction of oceanic plates beneath lighter continental plates. most of the earth's volcanoes are located around the pacific ring of fire because that the location of most of the earth's subduction zones.