The diagram models a cross-section of rock from a certain region. The life form represented by the fossil in rock layer 1 is not present in any of the layers of above
it. What is the most likely explanation for this? *
(20 Points)
A. The life form became extinct in the region long ago.
B. The life form only recently moved to the region.
C. The life form only recently evolved.
D. The life form evolved into all of the species in the next layer.

The cluster of developing cells from conception until birth is called an

What enzyme is most important for dna replication and why?

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