CBSE Class 7 Science Mechanism of Breathing in Human Beings
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Respiration
Human respiratory system and the process
- what is tissue
- respiration is breaking down of food to produce
- why do we cough
- INSPIRATION IS THE PROCESS OF
- Where are the lungs located in our body
- Why is it neccesary to keep our nose clean?
- what is alveoli
- what are alveoli?
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The given graph shows changes in the pressure in lungs during breathing.
- Why do testube with snail and plant both have higher concerntration of carbon dioxide than only snail or only water plant/
