Human Body-Class 3-Part 3

_________________, windpipe and lungs together form our respiratory system.

• 
• 
• 

We breathe out ___________________________.

• Oxygen

• Carbon dioxide

• Nitrogen

The breaking down of food into a simpler form to give energy is called ___________________

• Digestion

• Circulation

• Respiration

We should not chew the food properly while eating.

• True

• False

The undigested food goes to large intestine.

• True

• False