12.1 The acid in the stomach destroys microbes.
12.2 The skin prevents microbes from getting into the body.
12.3 Sticky mucus in the lungs nets microbes, and then cilia span it out of the lungs
13. D. Skin
14. False - Mucos prevents microbes in certain organs
15. False - It is a colorless fluid.
16. A. Bacteria
17. B1
8. False - Thymus in the anterior part of the chest directly behind the sternum between the lungs
19. C. Red blood cells
20. False - Bone marrow produces the known blood cells
21. True
22. False - It starts in the bone marrow.
23. True
Electrical or fire hazards, toxic fumes, armed or violent person-- anything that is unsafe.
Answer:
what is this supposed to mean
