There are five areas of health related fitness. They are heart and lung endurance or cardiovascular endurance, muscular strength, muscular endurance, flexibility, and body composition. Heart and lung endurance or cardiovascular endurance is the ability to exercise the entire body for long periods of time.
Answer: you might see little block-like structures if you look at any type of cell, if it is a plant cell you were looking at, you would be able to see the cell wall.
