What is global warming?, Mention the different ways of minimizing global warming., Mention the effects of acid rain., It is not advisable to cook food on a wood fire in a closed room. Give reasons., Explain the role of catalytic converters in automobile engines., Why do earthworms come out of soil in rainy season?, When water is heated, bubbles are observed. Why?., Why are tall chimneys used in some factories?, How is the balance of oxygen in atmospheric air maintained?, Why are industrial areas prone to acid rain?, Explain the importance of water vapour present in the atmosphere., Coastal regions tend to have higher humidity (% of water vapour in air) compared to non-coastal regions. Why, Increased concentration of greenhouse gases causes global warming. Why?, Why mirror turns misty when air from lungs is blown gently on to it?, Active component of air., Gases which causes acid rain., Name the products obtained after combustion of fossil fuels., Which is the major source of SO2, Compound used to identify the presence of water vapour present in atmosphere , Which gas is used by plants to synthesis the protein..

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