Evolution and Survival of the Fittest

Evolution and Survival of the Fittest

Must watch this https://www.youtube.com/watch?v=vnktXHBvE8s Charles Darwin- The theory of Natural selection
Must watch this https://www.youtube.com/watch?v=7VM9YxmULuo Natural selection

What is Evolution?
•Evolution is the gradual change of an organism over time.



What is Natural Selection? 
This is when organisms that are better adapted are “selected” to survive.
e.g. the rabbit that is more muscular and so can run away from a fox faster is more likely to survive.


How does Evolution Happen?
Evolution happens due to a process known as NATURAL SELECTION (where nature selects certain organisms to survive).
Natural selection happens because all individuals in a population show variation (differences) due to mutations (changes) in the organisms genes.  Some organisms within the population will be better adapted to survive because they are better at:
•Finding a mate
•Finding food
•Getting away from predators
•Fighting diseases

 •Those members of the population that are better adapted (fitter) survive and reproduce.This means that their genes are passed onto their offspring who will inherit the same advantageous feature.






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