First they don't use oxygen, plants use the CO2 in the air and release oxygen out into the air after the plant used up the CO2
Because the heart don't have the nerves to fell stressed, the most reliable organ to measure stress would be the brain. hope this helps
I think the answer is Capilaries
Hope this helps
The answer is sensory neurons. They have receptors on the epithelial tissue. Also referred to as afferent neurons, they convert stimuli from the environment into an impulse that is transmitted to the Central Nervous System for interpretation and for a response signal through the efferent /motor neurons.
