Choose four everyday objects from a group and draw a cladogram. For example, you could create a cladogram of the following four computer data storage devices: floppy disk, DVD, 2 GB USB key, 2 GB SD card. Choose your own group or use objects from one of the following groups: automobiles, things with engines, hair care products, or cleaning supplies. Draw your cladogram using the drawing tools provided in Word or with pencil and paper.

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