How did plant and animal species originate?

Species originated because plants and animals always adapted to the ever-changing environmental conditions. The naturalist Charles Darwin discovered this in the middle of the 19th century, The term 'survival of the fittest' outlined his theory that only those plants or animals that his theory that only those plants or animals that could adapt to the changing environment would survive, reproduce, and over time create new species. Those unable to adapt would become extinct. The ecological niche of an organism describes how that particular individual 'fits' into its ecosystem. For survival, each plant and animal needs to identify and retreat to its ecological niche. Now that we know how species originated, we can breed new species.