Final answer:
Succession describes the appearance and disappearance of species over time in a community. Convergence of form in organisms in similar environments is another evidence. The fossil record also provides evidence of a succession of forms.
Step-by-step explanation:
Succession describes the sequential appearance and disappearance of species in a community over time. In primary succession, newly exposed or newly formed land is colonized by living things; in secondary succession, part of an ecosystem is disturbed and remnants of the previous community remain.
Another evidence of evolution is the convergence of form in organisms that share similar environments. For example, species of unrelated animals, such as the arctic fox and ptarmigan, living in the arctic region have been selected for seasonal white phenotypes during winter to blend with the snow and ice (Figure 18.8). These similarities occur not because of common ancestry, but because of similar selection pressures-the benefits of predators not seeing them.
Additionally, the fossil record provides evidence for a succession of forms. In the case of gradual speciation, the record would show many intermediate forms, while punctuated equilibrium suggests new forms that persist essentially unchanged through several geological layers, then disappear just as a new form appears.