Topic: Food Energy and Respiration Subtopic: How we breathe?
What happen when we exhale?
Answer: When we exhale, the diaphragm muscles move upwards and the rib cage is pushed downwards and inwards. This decreases the volume of lungs, forcing the air out of the lungs.
- How minerals salts are taken up?
- What is job of red blood cells?
- What is photosynthesis?
- What blood is found on right hand side?
- What are properties of blood present in veins?
- What are petals?