CBSE Guess Questions 1 MARKS QUESTIONS 1. What will be the effect of increase in the amount of CO2 in the atmosphere on the average temperature of the earth? 2. Why is it necessary to conserve our environment? 3. Which of the following is the major constituent s of biogas? CO2, H2, CH4, CO 4. Which of the following pollutants of air would affect the capacity of blood in human bodies to absorb O2 from lungs? 5. Where was CHIPKO MOVEMENT started? 6. What will be the result of excess CO2? 7. What are the two major benefits of dams? 8. What are kulhs? 9. List any two traditional systems of water harvesting. 10. How is the increase in demand for energy affecting environment already? 2 MARKS QUESTIONS 1. Write two advantages of classifying energy sources as renewable and non renewable. 2. Why should we conserve forests? Suggest any two ways of con...
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