When people say words hurt is bc your feelings com from your brain and when you feel hurt or sad your brain makes the feeling physical. Like if you are depressed then your brain makes you sleep a lot so that you don't have to feel that pain during the day. Also, people can die from a broken hart bc it isn't your physical hart that is feeling everything it is actually your brain so it makes it self sabotage.
A. Venus
B. Asteroid
C. Comet
D. Uranus
D. it is cool because when u exercise u swet. so it is better in the cold.
The answer to your question is answer choice .1 Independent variable.
Answer:
Mitochondrial DNA is useful as a molecular clock because it displays uniparental inheritance
