Answer:
<u>B. Lithium, because it has two energy levels with one electron in the second level.</u>
A. an explanation based on prior scientific knowledge or observations
i just took the quiz and got the answer correct.
Answer:
Veins are blood vessels in humans, and most other animals that carry blood towards the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood to the heart. In contrast to veins, arteries carry blood away from the heart.
Explanation:
The flight or fight hormone, adrenaline
