Look on the internet please
100,000 years ago is your answer
Hello there.
Question: <span>During the ________ stage, the placenta is expelled from the uterus.
Answer: It is the placental stage.
Hope This Helps You!
Good Luck Studying ^-^</span>
The instrument of choice would be the the clam shell sampler, which is also know as a grab sampler. Another instrument they use is the piston corer which is an open tube on a cable that gets dropped from a ship.