Effects of Pollution on Waterbodies
Effects of Pollution on Waterbodies
The polluted water affects mankind as well as plants and animals.
1. Many diseases like cholera, dysentery, measles, typhoid etc. are caused due to consumption of polluted water.
2. The polluted water enhances the growth of algae and water hyacinth which reduces the supply of oxygen and sunlight to the aquatic fauna and flora resulting in adverse effect on their growth. This is called Eutrophication.
3. Industrial water contains compounds of mercury, cadmium, lead, arsenic, chromium etc. which are highly poisonous. They cause serious disorders of many kinds. They may cause death.
4. Flourides in water cause fluorosis which affect teeth and bones.
Soil Contamination: Soil becomes infertile due to the deposition of harmful chemicals discharged by industries. The high concentration of poisonous chemicals in soil can cause serious diseases in future generations.
Oil Spills from pipeline and tankers at sea are one of the most dangerous forms of pollution. The oil spreads very fast on the surface of water. It cuts off the supply of oxygen to the organisms living in sea and cause their death.
Soil Erosion caused by rains and floods takes all the sediment to the rivers and lakes. This results in the death of organisms living at the bottom of the lake or river thus upsetting the balance. The Dal lake in Srinagar, Nainital lake in Uttarakhand and Ulsoor lake in Bangalore are examples where silting is causing the choking of the lakes.
An oil spill covered a large area of water in an ocean. The marine life in that area was badly affected. A lot of marine animals were found dead and floating on the surface of the water. This is because _____________ .
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| Right Option : D | |||
| View Explanation | |||
Flourides in water cause ______________ which affect teeth and bones. | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following chemical in water affects teeth and bones ? | |||
| Right Option : C | |||
| View Explanation | |||
Students / Parents Reviews [20]
It 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
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
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
10thI 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 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...
Shreya Shrivastava
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
8thAbhyas 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
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Cheshta
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Aman Kumar Shrivastava
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Shivam Rana
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Hridey Preet
9thMy 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
8thAbout 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
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
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
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Prisha Gupta
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Ayan Ghosh
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
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Manish Kumar
10thOne 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.
