Which structures allow for the removal of wastes from the developing fetus? placenta and blastocyst
blastocyst and umbilical cord
umbilical cord and placenta
embryo and blastocyst

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.

Which describes the changes in the earths motion?

Hey everybody, i have another biology question. by what reproductive mechanism does a haplontic animal grow? initially mitosis, then meiosis completely by mitosis completely by meiosis initially by meiosis, then by mitosis