The answer is b sorry if it’s wrong
Answer:
placenta
Explanation:
Nutrients and waste products are exchanged between the mother and her baby through the placenta and umbilical cord without any mixing of their blood.
i got this off the wonderful world of the internet
Answer:
I think it's number (1) but I am not sure
Answer:
stand tall, your feet slightly wider than shoulder-width apart, your knees slightly bent. Hold your arms out to the side parallel with the ground and the palms of your hands facing forward. Stretch your arms back as far as possible.
