Which microscope takes advantage of differences in the refractive indexes of cell structures?

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

answer; ///(a) ;