What is the job of red blood cells?

How are the red blood cells pumped around the body?

How can red blood cells make space for the oxygen?

What is the job of white blood cells in our body?

What are platelets?

how much of each vitamin do you need?

What might happen of you fail to provide enough of each vitamin?

What is plasma?

how do we breath out of our lungs?

What happens to the air once inside our lungs?

name all the body systems