4. In which organ does digestion of food start and end?
A. anus-mouth
C. mouth-esophagus
B. mouth-stomach D mouth-small intestine
5. Which shows the correct order of food travelling through
the digestive system after it is swallowed?
A. stomach, esophagus, large intestine, small intestine
B. small intestine, large intestine, esophagus, stomach
C. esophagus, stomach, large intestine, small intestine
D. esophagus, stomach, small intestine, large intestine
6. Which of the following describes the function of the
respiratory system?
A. It digests the food that we eat.
B. It regulates the body temperature.
C. It transports blood to all parts of the body.
D. It helps remove carbon dioxide from the body



answer please ​