7B SCIENCE H.W.(20/10/16)

Dear Learners

Writing Task:

  1. What is breathing?
  2. What is respiration?
  3. Why do we suffer from muscle cramps after heavy exercise?How can it be healed?
  4. What do you mean by breathing rate?Write the breathing rate of a person at rest.
  5. Why do we sneeze when we inhale dust laden in air?
  6. Explain mechanism of breathing in human.
  7. Explain how plants respire.
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