D. all of the above. E. A and C only. B. scales to resist desiccation and resist abrasion. C. a long tongue for catching insects. D. the amniotic egg.
Hawaiian honeycreepers are an example of adaptive radiation.
B. there are many genera with only a few species in each. C. they belong to the same group of birds that Darwin studied in the Galapagos Islands. D. there are many extinctions that have occurred. E. all species occupy similar ecological niches. B. saltations in the evolution of species is impossible.