Sense of Proportion: The DNA in a single cell in your body contains about 4.5 billion base pairs. Imagine building a model of that DNA like a ladder with base pairs for rungs. If you make the rungs 1 inch apart, how long will the ladder be

Internal feedback works to maintain homeostasis when your a. heart rate decreases as your white blood cells increase b. breathing rate decreases as your red blood cells decrease c. heart rate increases as your liver is cleaning blood d. breathing rate increases as your heart rate increases