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Geological processes have helped to create many iconic features on Earth.
Processes, such as plate tectonics, are what shapes the face of the Earth.
Geology is the study of the composition and physical properties of rocks, minerals, gems and other related earth materials, including diamonds and crystals.
Scientists gain an understanding of the Earth's history by studying its composition.
Elements with high atomic number like uranium, polonium etc are unstable due to electrostatic repulsion between protons located in a small region of nucleus, hence disintegrated in small element for getting stability.
No other scientific method has managed to revolutionize man’s understanding not only of his present but also of events that already happened thousands of years ago.From early sixties to till now we can observe a phenomenal growth in the application of radioactive isotopes in medicine, industry and research.With the growth of uses of radioactive isotopes, there is parallel growth observed in the use of X-ray in the form of X-rays machines.The radioactive elements widely used different industries like medical, power plants, in quality control of materials, measuring the level of containers and in monitoring the thickness or consistency of paper. ) present in the atmosphere has been constant over long periods of years.This C-14 has been consumed by plants as well as by other living organism and remains constant for a long time, hence can be detected easily.