Exercise causes carbon dioxide levels to rise in the blood. CO2 levels are controlled in the body by a negative feedback loop. Put of this feedback loop in order from start to finish by dragging the responses into the appropriate boxes.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.

fossil's are like over rated rocks like low key not gonna lie i don't get why we can't just call them old rocks like for real i mean i call my grandpa and grandma that smh

i would think a oil tanker that has leaked in a bay