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respiration

Grade 7 Biology

respiration in organism class 7 pdf

Raji Senthil
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Questions covered are: 1. Why do we respire?   2. What is cellular respiration? 3. Write the difference between aerobic and anaerobic respiration? 4. Why do we get muscle cramps after heavy exercise? 5. What is breathing? 6. What makes up the respiratory system? 7. Write the Pathway of Breathing in…

Grade 6 Physics

class 6 air around us

Raji Senthil
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In 1774, Joseph Priestly showed that air contains oxygen gas Composition of Air USES OF AIR: Contamination of air by undesirable substances is known as Pollutants Methods to control Air Pollution: If Unable to download Click here Useful Links: CBSE CLASS 6 SOCIAL SCIENCE CBSE CLASS 6 SCIENCE CBSE CLASS…