Natural selection occurs due to a series of steps
⇒ Organisms show a wide range of variation due to the genes they possess.
⇒ These genes allow them to survive in particular environments, because
they survive they are able to pass on their genes.
⇒ The genes passed on to the offspring also allows them to survive Those
without the genes are not able to compete for food or shelter and will
⇒ Over time only certain individuals within a species will exist as they evolve
and out compete others
Not everyone agreed with Darwin and many scientists had different views.
A key viewpoint was that of Lamarck’s.
Lamarck argued that the characteristics used a lot by the organisms would
then be developed and passed on to the next generation.