What is breathing?--"Letting the air into and out of my lungs, through my
nose, mouth, and windpipe."

When do you breathe?--"All the time."

What do you breathe?--"Air."

What do you breaths through?--"My nose, mouth, and windpipe."

Where do you get the air?--"Everywhere."

Where do the lungs send the pure blood?--"To the heart."

Where does the heart send the pure blood?--"All through the body."

How does the heart send the pure blood through the body?--"Through pipes
called arteries."

What kind of blood passes through the arteries?--"Pure blood."

What kind of blood passes through the veins?--"Impure blood."

What carries the pure blood through the body?--"The arteries."

What carries the impure blood through the body?--"The veins."

What makes blood?--"Food and drink."

What is food?--"Anything good to eat."