studies and search for financing the project were in progress‚ the city expanded significantly resulting in a two-fold rise in population and a fivefold rise in the number of vehicles between 1981 and 1998.[10] Consequently‚ traffic congestion and pollution soared‚ as an increasing number of commuters took to private vehicles with the existing bus system unable to bear the load.[8] An attempt at
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forms such as Chlamydomonas to colonial forms such as Volvoxand to filamentous forms such as Ulothrix and Spirogyra. * Massive plant-like bodies are seen in some marine forms (such as kelps). Economic Importance * Carbon dioxide fixation on earth is majorly carried out by algae. * Important as primary producers of energy-rich compounds Example − Sargassum‚ Laminaria‚ and Porphyra used as food * Some brown and red algae species produce water-holding hydrocolloids. Example − Algin (brown
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UR EARTH SPEECH Our earth is the only beautiful planet in our solar system. This is the only planet which has life. Since 200 a.d. everything was good‚ but since the development of human culture‚ cities and modern life style everything has been changed. Now man and other animals started behaving differently. Man started using and misusing natural resources up to the limit. Now we don’t have crude oils‚ coals‚ less forests‚ wild animals. Our environment
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The world’s population is increasing at an alarming rate‚ therefore more and more food is required. The forests are being destroyed and more land is being cultivated‚ thus destroying the environment. Besides this the tribal population is removing trees to practise shifting cultivation and for fuel. To fulfill the demands of the urban population the forest cover is being destroyed. We need to conserve our forests as it preserves the ecological diversity and our life support system- water‚ air and
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ur earth is the only beautiful planet in our solar system.This is the only planet which have life.since 200 a.d.everything was good ‚but since the development of human culture‚cities and modern life style everything have been changed.Now man and other animals started behaving differently.Man started using and misusing natural resources up to the limit.Now we don’t have crude oils‚coals‚ less forests‚wild animals.Our environment is totally polluted ‚hence we are suffering from diseases‚we are drinking
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SAVE PLANET EARTH Introduction: Why are some people just thinking with their money and not with theirs heart? How could you throw your batteries‚ glass bottles‚ chemicals in the nature and think that they will disappear without consequences. I see it every day‚ do not you? We have to save the earth before it’s too late. First of all take care of the nature is a good thing for everyone. Everyone wants to have a good life‚ how could you want it if you not taking care of the world you should
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SAVE PLANET EARTH Our planet is changing. We need to help it change for the better and we’re asking for your help to do that! There are a lot of things that affect our planet in a bad way but the good news is that everyone can help to reduce them and do their bit for the environment. * Pleasing products Many household cleaning products contain harmful chemicals which are washed down the drain. Encourage your parents to buy eco-friendly products or even make your own from natural substances
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or being done. Recycling is one of the best ways for you to have a positive impact on the globe which we live. “Why should you recycle you ask?” Well‚ according to massrecycle.org and recycling-guide.org UK‚ recycling is crucial because recycling saves our environment‚ energy‚ natural resources‚ and it is critical to the people. Recycling is effective by reason of reducing greenhouse gasses and help end the source of global climate change. For example‚ on August 28th‚ 2005 hurricane Katrina hammered
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Save our Mother Nature The life of Human beings originated on the planet Earth .The “Mother Earth” is calling us for her protection. People have become selfish and they are killing the beautiful forests‚ damming the rivers and making more concrete walls without even realizing that by doing these activities‚ they are giving invitation to the termination of their own existence. The plants and mammals are like us-living things. The biggest challenge that our earth is facing today is ‘global warming’
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hard water? 4. Define alkalinity. 5. Why is water softened before using in boiler? 6. What is meant by priming and foaming? How can they be prevented? 7. What is meant by caustic embrittlement? How is it prevented? 8. Indicate the reasons for boiler corrosion. 9. What is the role of phosphates in the internal treatment of water? 10. What is calgon conditioning? How is it functioning in water treatment? 11. Mention requisites of potable water. 12. Write briefly on disinfection of water by
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