The earth is an ever-changing chunk of rock to put it at the lowest level of comprehension available. This rock that we call home is brewing with billions of life forms and is constantly changing every day. This can be attributed to the various cycles that are at work on this planet of our, from the hydrological system to the rock cycle the earth is an ever changing form. Pennsylvania is just a small part …showed first 75 words of 1444 total…

…showed last 75 words of 1444 total…grasses, which allowed for the mammals to take over. Like I had said at the beginning Pennsylvania is an ever-growing system that will probably look completely different 50 million years from now. As the plates continue to move and the continents continue to move with hem one can only guess what is in store next for our state. Hopefully with this you gain a better of idea of what was involved with the creation of PA.