The answer to 21 is C. Sex Cells. Men produce sperm, which is a type of sex cell (or "gamete") and women produce eggs, which are also a type of sex cell (or "gamete").
No, doesn't mean that it will always be inherited. Think of cancer , you can get it with or without it being heritable
Sympathetic Nervous System -> Raises Heart Rate
Peripheral Nervous System -> Runs throughout the body
Central Nervous System -> Brain and Spinal Cord
Autonomic Nervous System -> Digestion and emotion
Somatic Nervous System -> Sensation and body movement
There is no reasons it just a waste of time
Answer:
I would say B
Explanation:
I know for sure it's not C