I think the correct answer would be A. The yolk sac becomes the placenta. It is membranous sac that is attached to the embryo. It provides all the nutrition and the blood cells needed by the embryo. It is also called the umbilical vesicle.
Answer:
its option 2 and 4
Explanation:
because i'm the best and i already read this :)
Answer:
1
Explanation:
The pH scale goes from 0 to 14. 0 is the most acidic and 14 is the most basic so the middle, 7, is neither acidic or basic. Anyway, thos most acidic rating is the lowest number, so here that's 1
Support, protection, movement, mineral homeostasis, blood cell production and storage.
I believe the answer is b. glutamate from glucose and ammonia
