Answer:
a)The brain is protected by the bones of the skull and by a covering of three thin membranes called meninges.
b) Even before you leave the womb, your brain works throughout your life to control your body's functions and helps you understand and interact with the world around you.
Explanation:
The answer is body's line of defense. The first line of defense which includes physical as well as chemical barriers would defend the body from infection. It would include the tears, cilia, stomach acid,urine, white blood cells,mucus and the skin. The skin is the largest organ and would act as a barrier from pathogens. If first line of defense won't work the second line will then be activated.
Hepatitis B is the only sexual transmitted disease that has a vaccine available
Answer:
I believe its C. I'm not 100 percent sure.
