Explain the five key points of DARWIN'S evolution theory?
1) There are more young born in a season than can actually survive.
2) This results in a struggle for existence as more and more organisms struggle for natural resources. (Built of Malthus's Principles that all environments possess a carrying capacity).
3) Within any given population, there will always be variation of some sort.
4) Only those best adapted, mutated or not, will survive. Only those best suited get the chance to pass on their genes.
5) Organisms do not change due to environmental pressure, rather the allele frequency alters within the population as needed.
Firstly do not confuse evolution, which is a fact, with Darwins theory to explain it. Darwins theory attempts to explain evolution through the process of natural selection. It adequately explains why and how evolution occurs. A theory does not claim to explain everything about a specific matter but it fits the facts. It can also be used to make proposals and predictions. Darwins theory best fits the facts.