3.What are the body structures that both descendants share with this common ancestor? 4.Why do paleontologists make diagrams like this? What are they trying to show?

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

What is the difference between a meteoroid and a meteor?

Which characteristic should describe all evidence collected by a scientist? true obvious objective subjective