There is 19% adenine in a strand of dna.what % is guanine

The continents began to drift apart by the end of the Permian period.

The Permian is a geologic term and method which traverses 47 million years from the completion of the Carboniferous Time 298.9 million years before (Mya), to the start of the Triassic time 251.902 Mya. It is the ultimate period of the Paleozoic age; the subsequent Triassic period relates to the Mesozoic era. The theory of the Permian was inaugurated in 1841 by geologist Sir Roderick Murchison, who described it later the municipality of Perm.