Riccardo's Science Blog

WAC - Is it more important to Reduce, Reuse or Recycle? Written by: Riccardo Gavardoni 8B We sometimes ask ourselves, "Is it more important to Reduce, Reuse, or Recycle?" The short answer is, we should do all of them. Nevertheless, there is always one that stands out and is the most important of all, and that is reduce. There is a reason why we put reduce at the beginning of the 3 R's. That is because there is much more waste than we imagine, and since we can't take things out of landfills, we need to prevent waste from getting there. As a result, by reducing waste we can significantly reduce our environmental footprint, as reusing and recycling take a lot of time and resources. Reducing is one of those things you can do that is easy and can help the earth in extraordinary ways. By reducing waste, we reduce the amount of waste that will need to be recycled or sent to landfills and incinerators. Which reduces greenhouse gas emissions. Reducing also allows product...

Summary :  The vast unit of time known as the Precambrian started with the origin of the earth about 4.5 billion years ago and ended 570 million years ago. Largely thought to be a hot, steaming, and forbidding landscape, the primitive crust of the newly condensed planet continued to cool. The crust consisted largely of igneous intrusions and volcanic rocks, and sediments that were eroded from this irregular surface.The Precambrian is subdivided, from oldest to youngest, into three eons, the Hadean (4600−3900 million years ago), Archean (3900−2500 million years ago), and Proterozoic (2500−570 million years ago). During the Archean Eon, the earliest living cells formed in the ocean. The Paleozoic era (570−245 million years ago) was long believed by geologists to mark the beginning of life, because of the sudden abundance of complex organisms with hard parts in the fossil record. These organisms included trilobites and shelled animals called cephalopods. Life was restricte...

The Mississippian and Pennsylvanian periods are time periods inside the Carboniferous period.  The Carboniferous period was large so it was split into two others in this picture. This picture describes best the geologic time scale. that is why I am using the picture. Just wanted to point this out. Summary: 

Summary : Geology is the study of Earth, as well as Earth's structure and the forces that shape it.  James Hutton's principle is that geologic processes that operate today operated the same way in the past. As well as in other places that have the same conditions. Hutton's principal, uniformitarianism, allows us to estimate what happened to rocks long before humans were on Earth and can help us predict what may happen to Earth in the future.  T here are three types of rocks, igneous rocks, sedimentary rocks and metamorphic rocks. Igneous rocks form when molten material from under the Earth's surface cools and hardens.  Sedimentary rocks are made of sediments that were deposited and then pressed together to form a solid rock.   Metamorphic rock is an existing rock that has been changed by heat, pressure or chemical reactions. As well as t here are ways to tell a rocks age. There is the Relative age, and the Absolute age. The Relative age is when ...