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.
- What makes heart sound like lub?
- What is pollination?
- When is blood shifted to right hand side?
- Why is hemophilia dangerous?
- How minerals salts are taken up?
- What is disadvantage of self-pollination?