Evolution is driven by genetic variation and environmental pressures from "summary" of The Origin of Species by Charles Darwin
In the process of evolution, the driving forces are the variations in the genetic makeup of organisms and the environmental pressures that act upon them. Genetic variation is the raw material upon which natural selection acts, leading to changes in populations over time. These variations can arise from mutations, genetic recombination, or other processes that introduce new genetic traits into a population. Environmental pressures, on the other hand, are the external factors that influence the survival and reproduction of organisms. These pressures can include competition for resources, predation, climate change, and other factors that affect the fitness of individuals within a population. Organisms that possess genetic traits that are advantageous in a given environment are more likely to survive and reproduce, pass...
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