Water Pollution As Resource Management
Water Pollution As Resource Management
Water Pollution: Water free from harmful impurities and fit for drinking is called pure or fresh water. It is essentially required by all living organisms to carry out their various activities. But, the unrestricted and reckless activities of man make water dirty and unfit for drinking. The impure and dirty water is called ‘polluted water’.
1. Waste water from factories: Waste water released from factories contains several harmful chemicals. These chemicals are used in factories for making paints, detergents, etc. This waste water goes into rivers and lakes. The chemicals present in it destroy aquatic plants and animals. They are highly toxic and dangerous to human beings
2. Use of pesticides and fertilizers: A number of fertilizers and pesticides are freely used by farmers to increase their agricultural yield. These substances are poisonous. The contaminated water may then get into the bodies of animals causing several types of diseases.
3. Sewage disposal: Sewage coming out from towns and cities are dumped into rivers. Domestic and animal sewage helps the aquatic weeds to grow fast. The unrestricted growth of weeds makes water deficient in dissolved oxygen. So, aquatic life which uses dissolved oxygen is badly affected.
4. Change in temperature: In a dam, the temperature of water deep within is lower than that on the surface. When water is released from dams, there is a sudden change in temperature of water in the river. The change in temperature of river water is also caused by hot water released from industries. This affects the life forms present in water badly because they are used to live within a certain temperature range only. The eggs and larvae of several animals perish under such a sudden change in temperature
How to curb Water Pollution?
1. Sewage should not be released directly into rivers or lakes. They should be properly treated in sewage treatment plants.
2. Harmful chemicals should not be dumped into water bodies. They should be transformed into some useful substances.
3. Pesticides and fertilizers should be used only in a restricted manner.
Which of the following are correct : (a) The substances that contaminate or pollute water are called water pollutants. (b) Waste water released from factories contains several harmful chemicals.
| |||
| Right Option : C | |||
| View Explanation | |||
Water pollution leads to : | |||
| Right Option : D | |||
| View Explanation | |||
Total Earth's surface covered with water is | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [20]
Abhyas is an institute of high repute. Yogansh has taken admission last year. It creates abilities in child to prepare for competitive exams. Students are motivated by living prizes on basis of performance in Abhyas exams. He is satisfied with institute.
Yogansh Nyasi
7thMy experience with Abhyas Academy has been very good. When I was not in Abhyas whenever teacher ask questions I could not speak it confidently but when I came in Abhyas, my speaking skills developed and now I am the first one to give the answer of teachers question.
Upmanyu Sharma
7thAbhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are w...
Aman Kumar Shrivastava
10thMy experience with Abhyas academy is very nice or it can be said wonderful. I have been studying here from seven class. I have been completing my journey of three years. I am tinking that I should join Abhyas Academy in tenth class as I am seeing much improvement in Maths and English
Hridey Preet
9thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas academy is great place to learn. I have learnt a lot here they have finished my fear of not answering.It has created a habit of self studying in me.The teachers here are very supportive and helpful. Earlier my maths and science was good but now it has been much better than before.
Barkha Arora
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thUsually we see institutes offering objective based learning which usually causes a lag behind in subjective examinations which is the pattern followed by schools. I think it is really a work of planning to make us students grab the advantages of modes of examination, Objective Subjective and Onli...
Anika Saxena
8thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
Ayan Ghosh
8thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thWhen I have not joined Abhyas Academy, my skills of solving maths problems were not clear. But, after joining it, my skills have been developed and my concepts of science and SST are very well. I also came to know about other subjects such as vedic maths and reasoning.
Sharandeep Singh
7thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thAbhyas is good institution and a innovative institute also. It is a good platform of beginners.Due to Abhyas,he has got knoweledge about reasoning and confidence.My son has improved his vocabulary because of Abhyas.Teacher have very friendly atmosphere also.
Manish Kumar
10thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
