Answer:
The genetic material in the sperm combines with the genetic material in the egg to create a new cell that starts dividing rapidly. You're not actually pregnant until that bundle of new cells, known as the embryo, travels the rest of the way down the fallopian tube and attaches itself to the wall of your uterus.
Explanation:
Death by a predator is more natural because it follows the rules of the food chain and keeps nature in balance, keeping the environment healthy. However, whenever an animal dies of starvation, it means the food chain is out of balance since the animal wasn't in an environment where it could find something to feed off of.
Answer:
is about 4.6 billion years old
Decent from a common ancestor; natural selection.
