E. Answer the following questions.
1.
What is the importance of carbon dioxide and oxygen for living beings?
2.
Name three major sources of pollutants in the air. Also state the ill-effects of these air pollutants.
3. What is the importance of ozone gas? Why is global warming a threat to life on the earth?
4. How is rainfall caused? Explain it with the help of a diagram.
5. Write the difference between weather and climate.
Answers
Answer:
1)carbon dioxide is needed for plants to make their own food through photosynthesis the by product of photosynthesis is oxygen which is used by us humans and other animals
2)major sources of poluttants in air are factories, cars, etc which produce carbon di oxide, carbon mono oxide which are some of the major pollutants.
3)ozone gas or O3 is a type of gas which protects us from harmful UV rays(ultra violet radiation) which comes from our sun the ozone absorb these rays and gives off less harmful rays
4)there are certain times in a year like march to June, the northern hemisphere is nearer to the sun making it warmer ti's causes the water in water bodies like seas dry up and form clouds and when the earth is cooled down the water vapour condenses into liquid and precipitates and we call it rain
5)weather is the day to day condition of a perticular place while climate is taken on the basis like 15-20 years of may be a particular place or even the whole earth
Hope this helps
Answer:
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