Why does the placenta remove waste from the embroyo?

The placenta serves as a critical interface between the mother and the embryo, facilitating the exchange of nutrients and gases. It removes waste products, such as carbon dioxide and urea, from the embryo's blood to prevent toxic accumulation that could harm its development. This waste removal process is essential for maintaining a healthy environment for the embryo and ensuring its proper growth and function. Additionally, the placenta helps to regulate the composition of blood that the embryo receives, further supporting its developmental needs.