EVOLUTION a.What is evolution and what is natural selection? (8 marks) The theory of evolution arises out of man's need to explain the origins of both the Universe and Life. Evolution may be defined as that continual natural process through which organisms have acquired their peculiar structure and functions. Whilst this is the generally accepted explanation to the origins of the Universe and Life in history there have been many other theories put forward, such …showed first 75 words of 1168 total…

…showed last 75 words of 1168 total…result of natural selection, that is the gradual accumulation of advantageous traits by various populations that allowed some species to survive while those without the advantageous traits become extinct. Other factors such as genetic factors and environmental factors have also contributed to evolution, so that not only the accumulation of the best traits is responsible for change but spontaneous natural mutations and also environmental changes impacted on species forcing them to adapt to their surroundings.