Because its air we cant see it thats why its clear because it would be scary if we were able to see air! :)
Answer:
I think is true I'm not sure
Answer:
Each type of joint has a possible range of motion associated with it is joint's actual range of motion, but, is dependent upon the fitness levels of the individual. the possible range of motion is the theoretical maximal range of motion, the actual range of motion will always be less.
