gets nutrients out of food to help the kidneys
sends messages to bring oxygen in and carbon dioxide out
brings oxygen into the body to give to the muscles
The variable we measure in an experiment.
brings oxygen into the body that will be delivered to the brain
The variable we keep the same in an experiment
gets nutrients out of food that help the brain
brings oxygen into the body to give to the kidneys
sends messages to make the heart beat
The variable we change in an experiment.
sends messages to let body know the bladder is full
brings oxygen into the body that will be delivered to the small intestine
delivers gases and nutrients to the brain
get nutrients out of food that help the heart
brings oxygen to give to the red blood cells and also get carbon dioxide from the red blood cells
gets nutrients (protein) out of food to help the muscles
helps control the speed food is broken down
Independent Variable
Controlled Variable
Dependent Variable
