Were there super continents before pangea?
Pangaea is used to describe the state where all the land on earth was one great big landmass and therefore there was just one ocean too which was everything that surrounded that land mass. Therefore, before pangaea or all the land was linked you are asking whether the land was previously split before it came together. That is possible – we do not know the answer. However, we read about it and current theory suggests that yes there have been break ups and come together forming super continents before, though this hardly seems set in stone. What are examples of techno fossils? In which case I guess that you might be referring to things such as nuclear waste and other waste products of our recent systems for instance rubbish dumps and similar. We have also fired some artifacts into space, for instance on spacecraft that aliens might some time come across we have given a glimpse or snapshot of our lives at a particular time in history. What are the three major types of rocks? The three typ
