Tudy the illustration above. it depicts vertebrates at different stages of embryological development. some species are more closely related than others. which arrangement of the different phyla places the embryos in an order based on relatedness from least to most complex? a) fish, amphibian, reptile, bird, mammal b) amphibian, reptile, mammal, bird, fish c) fish, reptile, mammal, bird, amphibian d) mammal, bird, reptile, amphibian, fish

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.