Gabriella weighs 450 n. she climbs a flight of stairs to a height of 3 m. it takes her 5 seconds. if she were to climb the flight of stairs again in the same amount of time, but this time while carrying two heavy books, how does the amount of work she does change from the first to the second trip up the stairs? a. the work increases. b. the work increases, and then decreases. c. the work decreases, and then increases. d. the work decreases.

Subduction zones form when an oceanic plate collides with another oceanic plate or continental plate. the continental crust is lighter and less dense than oceanic crust. continental crust's density is approximately 2.7 grams per cubic centimeter. oceanic crust is thinner and the average density is about 3.3 cubic centimeters. when the two crustal plates converge the oceanic plate always bends and subducts beneath a continental plate. once the oceanic crust subjects, the rocks are subjected to changes in heat and pressure. because of this, we would expect to find rocks in the area of a subduction. a) clastic b) igneous c) metamorphic d) sedimentary