within which structure in the human body does specialization of parts of the developing a baby take place? PLEASE HELP

What came first the elephent or the crocodile

Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic