Two different strands of hair were found at a crime scene. One had
class evidence ONLY, while the other
sample contained class AND individual
evidence. Explain how this is possible,
and how would the samples be tested.

Which of the four major uses is predicted to change the least by 2020?

What does the positioning of transcription factors determine?

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