How many receiving chambers and outgoing chambers does the heart have

Which pattern most likely came from a gunshot and which one was produced from a blow on the head? explain your answer?

How many types of rock can form from the rock cycle

Once an egg cell is fertilized by sperm, the cell then, as the embryo develops, it receives nourishment and eliminates wastes by transferring substances from its blood to its mother's blood. a. becomes a fetus immediately and exits the womb b. begins to divide and implants itself in the wall of the uterus c. remains in the uterus without dividing for several months d. travels back to the ovaries until the fetus is developed