C. Is the first thing, B. Is second, A. Is third, and D. Is last
It's called vaccine unbundling
it's commonly found in Europe and south Asia. It is very common for vaccines to be sold in a packeted form
Unbundling a vaccine can make you get a specific vaccine that you want at a lower cost
The red blood cells have proteins, hemoglobin and myoglobin, that are responsible for the storage of oxygen from the lungs and transporting it through the body. When the hemoglobin and myoglobin are low, it is because the iron levels are low. When this occurs, the blood, which carries the oxygen, reduces the ability to process its work. When this occurs, anemia, a condition that may cause chest pain, tiredness, and headaches.
Answer:
respiratory system, digestive and excretory system, circulatory system, urinary system, integumentary system
Explanation: