Nature, we all knows what that is. There is several meanings of nature to describe nature, but what is nature used in science? We also know that science investigates nature, and there is even a field in especially dedicated to investigate nature, but the question is what is nature used in science? This question can be answered quit easily; we can say nature’s use in science is to help create products, medicines, production, and many others. But this is not what is being asked. In order to answer this question, first we have to explain what is meant by natural or nature in context. Natural is the workings of nature, meaning that how things work, and not how they should work. Natural or nature is not just referring to nature as in the environment, but is also part of it, but the way things work, and this stretches to all sciences and philosophy. An example of this would be in astrology, the laws of planetary motion set forth by Johannes Kepler (1571 – 1630) did not describe to the planets that they should move in such-and-such orbits, with penalties invoked if they should fail; rather they describe how planets actually move. This leads us now to the process of nature or the natural process. The natural process is a process existing in or produced by nature (rather than by the intent of human beings), and these are natural forces, and an example of this is volcanic activity. So basically the natural process is a thing that happen natural, like in the example volcanic activity. But this refers only to nature, what about machines that do a specific task naturally, like a clock telling time? This is the conflict with in the natural process, and investigating the natural world, for some things which are natural are sometimes labeled mechanical. But also how they are explained. ...