The best answer for the blood vessels' valves would be these are veins that would then help in preventing the back flow of blood because the walls have small muscle to pump the blood back to the heart.Hope this is the answer.
Status asthmaticus is acute exacerbation of asthma that does not respond to home treatment (nasal inhaler)
Answer:
I am pretty sure that the answer is iron.
Explanation:
I just took the quiz and grains were wrong, and when you diet you can eat a lot of dairy products and your supposed to drink lots of water. That is how I concluded that iron is the answer. Tell me if I got it right.
Answer:
definitely I would say a virus
