True or false ? the oxygen level inhaled air is 5% greater than exhaled hair because our body cells have not used any oxygen yet

Arepair man charged $93.06 the price included 2 hours of labor and 40 service charge how much does the repairmen charge per hour for labor?

What is the function of the somatic nervous system? connects the brain and the spinal cord to the rest of the body carry signals to the muscles and glands includes all nerves controlling the muscular system and external sensory receptors controls internal organs like the heart and bladder

What would happen if the tubing with the yellow band was placed in a beaker of distilled water?