These altered instructions then become more common through this 'natural selection' and, in time, new kinds of animals or plants evolve.
Times, Sunday Times
Here, plants evolve that have resistance to high levels of metals in the soil.
Retrieved from Wikipedia CC BY-SA 3.0
Plants evolve mechanisms of resistance to being eaten by caterpillars, including the evolution of chemical toxins and physical barriers such as hairs.
Retrieved from Wikipedia CC BY-SA 3.0