There is external and internal so I'll list th external. The most important is skin then mucus, sweat or secretion, hair, nails and tears which are all part of the integumentary. Some internal defenses are white blood cells and T cells.
Answer:
Positive, Positive, Positive, Positive, Negative, Positive, Positive, (2) is answer to 22.
Explanation:
Because all those answers are correct.
The head at the top, the tail is just for getting to the egg
