A student was using a microscope with a 10X eyepiece and 40X objective lens. She viewed the edge of a metric rule under low power and observed
the following field of view. What is the diameter of the low-power field of view in mm?

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