We know that many human activities lead to increasing levels of pollution of the air, water-bodies and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?
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Write a note on how forests influence the quality of our air, soil and water resources.
You have seen weather reports on television and in newspapers. How do you think we are able to predict the weather?
How are living organisms dependent on the soil? Are organisms that live in water totally independent of soil as a resource?
Why is water essential for life?
Why is the atmosphere essential for life?
What are the two forms of oxygen found in the atmosphere?
What is the greenhouse effect?
List any three human activities which would lead to an increase in the carbon dioxide content of air.
Name two biologically important compounds that contain both oxygen and nitrogen.
What are the different states in which water is found during the water cycle?
What are the methods of preventing or reducing soil erosion?
What is soil erosion?
How is soil formed?
Do you know of any activity which may be polluting this water source?
What is the major source of fresh water in the city/town/village where you live?
Why do organisms need water?
List any three human activities that you think would lead to air pollution.
How are clouds formed?
What causes winds?
How does the atmosphere act as a blanket?
How is our atmosphere different from the atmospheres on Venus and Mars?
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