The Challenger Deep is in the southern end of the Mariana Trench. It is estimated to be 305meters deep.
Plate tectonics is the theory that the earth's crust(lithosphere) is separated into plates and that they glide over the mantle(the layer underneath the lithosphere).
<span>When the idea of evolution originated, scientists used objects that were similar. An example being given would be that of monkeys and humans were much more alike than dogs and monkeys. When scientists realized how minor those differences were, it enabled them to study how close those relationships actually were. Public knowledge grew about cells and DNA; scientists also knew how it could be used to determine similarities and differences in proteins in humans and animals. Tying all of these methods together will create an evolutionary map.</span>
