The Origin of Species was a book written by the English scientist Charles Darwin in 1859. Its full name is On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life. It is arguably the pivotal work in evolutionary biology.
The Origin of Species was the culmination of the research of Charles Darwin since the evidence found during his voyage on the Beagle and experiments and research he made afterwards.
The book is readable even to the non-specialist. It caused major controversy over the creation-evolution debate. Natural selection is the most accepted scientific model of how species evolve.
- Species have more offspring than can grow to adulthood
- Population size has small changes
- Food is limited but stable through time
- There is a struggle for survival called struggle for life
- There are variations in the individuals which can be advantages to survive
- These variations are inheritable, so the most apt are the ones who survive (called natural selection)
- The variations sometimes accumulate until they form new species (This is contrary to common religious belief at that time that said that God created all species at the beginning. According to Darwin the species have changed much since their appearance, which is caused by natural selection). This is called speciation.
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