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Why do we often sneeze when we inhale a lot of dust-laden air?

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LAKHMIR SINGH & MANJIT KAUR-RESPIRATION IN ORGANISMS -EXERCISE
  1. What is yeast ? What type of respiration is carried out by yeast ?

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  2. why do mountaineers carry oxygen gas cylinders with them ?

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  3. Why do we often sneeze when we inhale a lot of dust-laden air?

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  4. State the harmful effects of smoking.

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  5. Define 'breathing rate'. How does the breathing rate in children diffe...

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  6. Name the breathing organs in fish

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  7. Name the breathing organs in earthworm

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  8. Name the breathing organs in frog

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  9. Name the breathing organs in insects

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  10. Describe the process of breathing and respiration the following anima...

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  11. Describe the process of breathing and respiration the following anima...

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  12. Describe the process of breathing and respiration the following anima...

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  13. Describe the process of breathing and respiration the following anima...

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  14. Descibe the process of respiration : in the leaves of a plant.

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  15. Descibe the process of respiration : In the roots of a plant.

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  16. What is meant by aerobic respiration ? Explain by writing a word equat...

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  17. What type of respiration takes place in human muscles during heavy phy...

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  18. What is meant by respiration ? Write a word equation for it. What is t...

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  19. What type of respiration usually takes place in humans?

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  20. What are the main organs of respiratory system in humans?

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