Answer:
endothelium is the correct answer
Hope this helpsss, please brainliest!!
The oxygen goes to the respiratory system and goes to the cells of the body. The food has glucose and that goes into the heart and blood vessels. Some of the glucose goes to the cells of the body.
A. Healthier skin you dont need healthy sking to benifit in strength building.
Well in virtual you are online and in person you are there and face to face with people