Question

4. How do humans breathe ? 5. Why must living things eat?रामजीत डू यू यू आर फूल ​

Answer 1

Answer:

Breathing in:

The diaphragm is pulled flat, pushing out the lower ribcage and abdomen. At the same time, the muscles between your ribs pull your rib cage up and out. This expands the chest and draws air into the lungs. Air is pulled into your nose or mouth, and into your windpipe.

Organisms need to take food to get energy and perform life processes. A living organism undergoes many life processes like nutrition, respiration, digestion, transportation, excretion, blood circulation, and reproduction. ... Hence, organisms need to take food.

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