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.
Polluted water causes AIDS. True or False | |||
Right Option : B | |||
View Explanation |
Which of the following diseases is water due to water pollution? | |||
Right Option : A | |||
View Explanation |
Which of the following is not found in polluted water? | |||
Right Option : B | |||
View Explanation |
Third 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 ...
The experience was nice. I studied here for three years and saw a tremendous change in myself. I started liking subjects like English and SST which earlier I ran from. Extra knowledge gave me confidence to overcome competitive exams. One of the best institutes for secondary education.
We started with lot of hope that Abhyas will help in better understnding of complex topics of highers classes. we are not disappointed with the progress our child has made after attending Abhyas. Though need to mention that we expected a lot more. On a scale of 1-10, we would give may be 7.
Abhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
My 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
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.
Abhyas 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.
In terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
Abhyas 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.
Abhyas 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...
When 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.
Being 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.
Abhyas 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.
It 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.
A marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
My 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.
My 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.
My 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.
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Usually 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...