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Darwin: Influences and Big Ideas How did each influence Darwin’s Ideas? HMS Beagle Trip and Lyell Cuvier Malthus Darwin’s Observations & Inferences Observation 1: Individuals within populations vary in their inherited traits. Observation 2: Offspring are produced in greater numbers than can survive in the environment and many die before reproducing Inference 1: Individuals whose inherited traits are advantageous in a particular environment are more likely to survive to reproduce. Inference 2: Over many generations, the unequal survival and reproduction of individuals with traits advantageous to the environment will result in an accumulation of those traits in the population. Natural Selection What are the mechanisms of evolution?