The Process of Natural selection according to Darwin’s Theory of evolution only the organisms best fit for that environment will stay alive and will start reproducing, making more of the same organisms to grow over the generations and the weak will be destroyed because it will not be fit for that environment. Natural selection is also the process of biological heritable traits becoming either more or less common in the population so it can develop the organisms fit for that environment. It is because of random mutation that these organisms get there beneficial genetics which then make them more liable to survive in the world. Also not always do these genes get passed on.