Anyone can explain Darwin's theory of evolution?

Question

Can anyone give a good explanation without the words "natural selection" please?

Answer 1

According to Darwin the members of a species fight it out with each other and the strong members of the species survive and make babies while the weaker ones die off or are prevented for procreating by the stronger members. This is a theory of gradual evolution.

Stephen J Gould and others promote a theory of punctuated equilibrium. This theory is that a species remains more or less the same until a major event occurs that wipes out some members of the species and lets others survive and they then propagate whatever trait it was that helped them survive since those without it died off.

I hope that helps.

Answer 2

Evolution is the process of life (living forms) needing to change to better fit their habitat. Many species have adapted to match both available food or perhaps their environment or evolved mimicry to prevent their own extinction. In the Green Tree Boa of South America and the Green Tree Python of New Guinea and Australia, the two different reptiles evolved the same basic coloration, resting positions and even feeding on similar prey (birds) but they are un-related. In the tropical water of the South China Sea are sea urchins with long spines which are used for defense but other sea urchins along the turbulent coast of South America lack those long delicate spines and have evolved plate-like structures to withstand the pounding seas. Natural selection is a catch-all term meaning those that survive are better suited to produce off-spring and indeed it is so. At a University, we begin with 2,000 students and over four years, many fall by the way but some go on to attain doctorates. Is it different in nature? As a biologist, I am astounded at the clever ways that nature has perfected things. Even the evolution of snake fangs is amazing...from a simple groove into a partial closed channel into a fang that is a model of a hypodermic needle. How can one dispute that nature (God) didn't make modifications? On the island of Qui Madre Grande off the coast of Brazil is an amazing example of nature at work. There is a species of pit viper there that feeds on birds but obviously if the snake population is too heavy, they self destruct with no food, and the number of birds returning to the island would decrease. Nature has intervened with about half of the snakes born being neutral-not male or female and thusly preventing a population explosion.

Answer 3

Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Darwin's general theory presumes the development of life from non-life and stresses a purely naturalistic (undirected) "descent with modification". That is, complex creatures evolve from more simplistic ancestors naturally over time.

Answer 4

Darwin based his theory on overseeing the finches at Galapagos Island. It is there that he found that different finches (birds) occupy different niches (areas where they forage). With that in mind, he came up with the theory of survival of the fittest and that there is a constant struggle to be the "best". As an example, a looong time ago, all the finches occupy the same niche... as in they all shared the same food source. But as their numbers grew, competition began for the same food source. So some birds started to die off due to competition. Other finches soon to evolve to adapt to a different food source, so they were able to occupy a different niche, hence avoiding competition.
Thus is the foundation for his theory. Organisms tend to evolve (change; adapt) to ensure survival.

Answer 5

It's called natural selection ;)

Answer 6

darwin's theory states that the animals which are best suited/adapted to their environment will survive to reproduce..in other words the better adapted survive and the not so well adapted die out which is natural selection.

Answer 7

"Survival of the fittest", in brief.

Answer 8

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But when you talk about destruction uhh, don't

you know that you can count me out..





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