NCERT Solutions Class 9 Scinece Chapter 14 Natural Resources Download In Pdf
Question 1. How is our atmosphere different from the atmospheres on Venus and Mars?
Question 2. How does the atmosphere act as a blanket?
Question 3. What causes winds?
Question 4. How are clouds formed?
Question 5. List any three human activities that you think would lead to air pollution.
Question 1. Why do organisms need water?
Question 2. What is the major source of fresh water in the city/town/village where you live?
Question 3. Do you know of any activity which may be polluting this water source?
Question 1. How is soil formed?
Question 2. What is soil erosion?
Question 3. What are the methods of preventing or reducing soil erosion?
Question 1. What are the different states in which water is found during the water cycle?
Question 2. Name two biologically important compounds that contain both oxygen and nitrogen.
Question 3. List any three human activities which would lead to an increase in the carbon dioxide content of air.
Question 4. What is the greenhouse effect?
Question 5. What are the two forms of oxygen found in the atmosphere?
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