Darwin's theory of natural selection issued a profound challenge to orthodox thought and belief: no being or species has been specifically created; all are locked into a pitiless struggle for existence, with extinction looming for those not fitted for the task.Yet The Origin of Species (1859) is also a humane and inspirational vision of ecological inter relatedness, revealing the complex mutual inter dependencies between animal and plant life, climate and physical environment, and-by implication-within the human world.
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