A person should at least get 60 minutes of physical activity a day.
Arrector pili muscle is the one with hair follicles that has a smooth muscle which is in an unconscious control rather than conscious control. This pull up the follicle causing the goose bumps then. Hope this is the right answer and will be of big help then.
The answer is C. Squamous
I think that oxygen is needed , because it helps elevate the blood level and help oxygen spread to your brain/ heart.
