Activity 10 The Jubilee Phenomenon

Forests: Our Lifeline O - NCERT

Fig. 17.10 Balance of oxygen and carbon dioxide Paheli reminded their friends that they have studied photosynthesis in Chapter 1. balance of oxygen and carbon dioxide in the atmosphere (Fig. 17.10). That is why forests are called lungs. The children saw clouds forming in the sky. Boojho recalled what he had learnt about the water cycle in Class VI.