Answer:
a) The Sun is one of many stars in the Universe.
Explanation:
The Sun is one of many stars in the Universe, as there are 200 billion stars in our galaxy alone. Therefore, option (a) is the correct answer.
The function of a renal artery (blood vessel) is to carrie oxygenated blood to your kidneys, whereas the function of pons is to relay messages from the cortex of the brain to the cerebellum. It serves as a message station between several areas of the brain.
melatonin is a hormone secreted by the pineal gland and its main function is to regulate sleep rhythm (circadian rhythm)
