Evolution is change.S Evolution is a certain species changing to become better adapted to their surroundings and in the end this modification causes this species to become a new breed altogether. There was no scientist that understood how evolution works until Charles Darwin and Alfred Russel Wallace (See figure 1) explained it to them. Lots of scientists had realised that plants and animals change with time, as palaeontologists could track the evolution of life in the fossil record. The scientists figured out that life began in sea, then the fish evolved, and the fish developed in to amphibians on land, which then became reptiles, and then mammals etc. But none of them could figure out how this happened. Charles Darwin and Alfred Russel Wallace showed everybody that evolution happened with no guidance and it was just a random process with no direction and design. What Darwin and Wallace discovered was called natural selection. This is a process that causes most evolution. This requires three things in order to work, variability, hereditability, and a struggle for existence.
What is variability?
Variability means that every single person/animal/creature in their species must be different from one another. This is easy for us to analyse in our own species. When you look around at the people around you it is very noticeable to see that everyone is unalike. Everybody has their own traits such as their, hair colour, eye colour, skin colour, different personalities, skills etc. This is what it is like for all species.
What is Hereditability?
Hereditability is when some of the traits (Like the traits from above in the variability section) must be passed on to the children from the...
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...ure and this will be totally different to what we are today.
Tuttle, R.H. (2015) ‘Human evolution’, in Encyclopædia Britannica. Available at: http://www.britannica.com/science/human-evolution (Accessed: 14 March 2016).
Evolution (no date) Available at: http://necsi.edu/projects/evolution/lamarck/lamarck/lamarck_lamarck.html (Accessed: 14 March 2016).
Alexander, 1 (2011) How does evolution work? Available at: https://astrobioloblog.wordpress.com/2011/09/02/how-does-evolution-work/ (Accessed: 14 March 2016)
AllAboutScience, 2016 (2002) Darwin’s theory of evolution. Available at: http://www.darwins-theory-of-evolution.com/ (Accessed: 14 March 2016).
Newitz, A. (2013) 8 incredible facts you may not know about human evolution. Available at: http://io9.gizmodo.com/8-incredible-facts-you-may-not-know-about-human-evoluti-1465273693 (Accessed: 14 March 2016).
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