Variable Resistance it is a Exercise that involves special
weight machines that change the load throughout the range of motion so that
there is a more consistent stress on the muscles. 45%b percent of body mass do muscles are
made.
Answer:
No, The respiratory system does not work alone in transporting oxygen through the body. The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.
Explanation:
Hope that helps!
This process is called Facilitated diffusion. because the protein channels must help the substance get into the cell based on fitting. It's important to regulating what comes in and goes out.
