Organisms make gametes through meiosis.
Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information. These cells are our sex cells – sperm in males, eggs in females.
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:
d.) all of the above
changing and separating the location of continents
Answer:
dangerous loss of blood due to inability to stop bleeding
organ damage due to lack of oxygenated blood in body
heart attack due to partially blocked vena cava
Explanation:
i think u should ask the doctor because thats like doctor stuff