The diagram shows the embryo development of four vertebrates and suggests all of the following EXCEPT
A) common ancestry of vertebrates. (this answer is incorrected)
B) there are no similarities in the embryos of all four groups.
C) there are very few differences in the early development of any vertebrates.
D) common features (gills and segments) in the embryos of all vertebrates.

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

Select all that apply. why are common names not a good reference to a species? common names can be in different languages common names vary with location common names vary with culture common names vary with species color

8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.