NH3 since they are both non metals
Answer:C
He observed 15 different finch species that originated as one ancestral bird. all differing in body shape, beak size, and mating habbits
Answer:
The pulmonary veins carry oxygenated blood to the heart. Air enters the bronchioles in the lungs and reaches the alveoli. The capillaries join together to reach the arteries, transferring the oxygen. The oxygen-rich blood moves from the aorta and reaches the kidneys through a series of blood vessels.