When the person from number one was creating true breeding lines of plants for certain traits, what method was used? A. Self pollination over and over a while discarding plants with unwanted traits
B. Cross pollination over and over while discarding plans with unwanted traits
C. Allowing for cross pollination by bees
D. Not allowing the plants to pollinate at all

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