Skills and Heredity
I believe skills and heredity is the best choice because you should have a family lineages of healthy people and have the skillset to do the physically fit task, though my secondary choice is Fitness and skills, you can't be obese and be able to run 100miles, these are just my thoughts.
The answer is A.<span> It wants to help prevent the spread of communicable diseases through contaminated water</span>
Answer:
B is my guess not positive though maybe wait for someone else to back me up on it
Its main function is to act as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste products, and regulate body temperature.
I would say D for this one mostly because I know for sure most of these answers are right.
