Match the terms to their definition. 1. constructive a process in which the edge of one crustal plate sinks below the edge of another 2. delta thick soil accumulations of very fine-grained particles 3. erosion a force applied to the earth's crust which causes deformation 4. loess a deposit of soil and sand at the mouth of a river or stream 5. stress the movement of weathered material from one place to another 6. subduction promoting development or growth