I. human embryo gets nutrients from mother via placenta ii. chick embryo develops externally from mother, not human iii. chick dependent on yolk for nutrients iv. oxygen from mother's blood transferred to human embryo v. oxygen enters egg air sac to provide oxygen for bird embryo consider the embryos of birds and humans. there are some important similarities, but there are some differences too, especially in the manner in which the embryos develop. review the prompt to determine all the ways in which the bird and human embryos are different. a) ii, iv b) i, ii, iii c) i, ii, iii, iv d) all are correct