Answer:
C
Explanation:
Oxygen moves through our airway tract and goes down to the alveoli which are sacs for air to go in. Oxygen then moves through the capillaries and that's where Red blood cells pick up O2 and release CO2 to be expelled during exhalation.
Maybe you should take him to the hospital/doctor or go tell a nearby adult.
You should train for the event and increase the intensity of the exercise routine.
The important structure of the urinary system is:
The kidneys, ureters, bladder, and urethra are the primary structures of the urinary system. they filter blood and remove waste from the body in the form of urine. The size and position of lower urinary structures vary with male and female anatomy.
Hope this helped
