Today we focused most of our time talking about different ideas of how the Earth originated and the early Earth history. I learned that it is very possible that all the continents came from one supercontinent called Pangea. I first learned this when I was in elementary school but I didn’t realize that there was actually more facts to support this supercontinent other than the fact that the continents look like they would fit together smoothly. Some dinosaur bones have been found on the east coast of South America and on the west coast of west Africa of the same species of dinosaur. Assuming this dinosaur couldn’t swim thousands of miles across the ocean, the dinosaur would of had to walk to the other continent. This means that the supercontinent must have existed.
It is important that we understand plate tectonics in a marine biology course because of seafloor spreading creates inches more of ocean every year. Seafloor spreading is caused by two plates separating. The best example of this is the Marianas Trench in the Atlantic Ocean. It is also very important for us to understand as much as we can about the origin of the world because the more we know about the origin the more we can find out about how humans became shared are from the most primordial organisms.
