The most applicable answer would be D. Energy
The 3rd one is the answer
Answer: The placenta is an organ that develops in your uterus during pregnancy. This structure provides oxygen and nutrients to your growing baby and removes waste products from your baby's blood. The placenta attaches to the wall of your uterus, and your baby's umbilical cord arises from it.
Explanation:
Answer:
parasites
Explanation:
live and feed inside other organisms