Global Warming
Global Warming
As we know that the amount of is now increasing due to human activities. Excess carbon dioxide present in the atmosphere traps a lot of heat and leads to warming of the earth’s surface, hence increased temperature. This is called Global Warming.
Global warming can cause melting of ice at the poles. Because of this the sea level can rise and would lead to floods. There is news in the recent newspapers that the Gangotri glacier in the Himalayas had started melting because of global warming. Reduced dependence on fossil fuels and Afforestation are the most important methods of reducing the proportion of carbon dioxide in the atmosphere, and arresting global warming. Global warming has become a major concern for government all over the world. Many countries have reached an agreement to reduce the emission of greenhouse gases.
Causes of Air pollution are :-
Causes of air pollution can be divided into two :-
1) Man made 2) Natural
Natural causes of Air Pollution :-
Volcanic eruptions :-
They constitute one of the significant natural causes affecting global warming because of the increased release of gases and smoke from the eruptions.
Natural forest fires :-
When significant scale vegetation burns, it leads to release of stored carbon and a rise in green house gas emission.
Solar activities :-
Changes in wavelength and duration of solar energy or sunspots could also impact over global warming and atmospheric temperature.
Man made causes of Air Pollution :-
High level of Deforestation :-
Deforestation results in increased amount of carbon dioxide gas () in atmosphere. As trees and plants are responsible for release of oxygen and absorption of Carbon dioxide gas , thereby maintaining a state of ecological balance.
Due to deforestation absorption of Carbon dioxide gas decreases and ultimately results in imbalance of carbon dioxide gas in atmosphere.
Transportation and use of vehicles :-
Gaseous emissions from cars and vehicles often drive temperature rise by trapping energy, which translate into heat. Such activities come under 'anthropogenic forcing', i.e. human influenced forces.
Emission of Chlorofluorocarbons :-
The atmospheric ozone layer is responsible for protecting the earth's temperature from the sun's harmful UV radiation. Release of such gases like CFC's or Chlorofluorocarbons in the air, damage the ozone layer.
Emission of industries and power plants :-
With the advent of industrialization, the rising usage of electricity and heat results in increased global warming.
Combustion of fossil fuels , overpopulation :-
As population is increasing burden on fossil fuels is also increasing due to increased energy demands. Combustion of fossil fuels results in increased amount of harmful gases in the atmosphere which are the main cause of global warming.
Effects of Global Warming :-
Rise in temperature leading to melting of glaciers :-
Melting of glaciers and snow melts will cause severe water shortages and droughts with higher frequencies giving way to heatwaves and extreme weather conditions in the mid latitudes.
Ecological Risks :-
Global warming has contributed to the extension of drier climatic zones such as deserts in the subtropics. Increased temperature will leads to the extinction of many species and reduced ecological diversity.
The threat to marine life :
Global warming can lead to the destruction of marine and coral life underwater. Higher content of carbon dioxide in water results in damage to aquatic life.
Health factors :-
There are various indirect effects such as malnutrition inflicted by crop failures. Scanty rainfall leading to desertification can also cause several diseases due to global warming.
Flooding in low altitude regions :-
Rise in sea level, and high flooding tendencies can damage human habitation and cause mass destruction.
Which of the following are correct ? (a) Excess carbon dioxide present in the atmosphere traps a lot of heat and leads to warming of the earth’s surface, hence increased temperature and is called Global Warming. (b) When significant scale vegetation burns, it leads to release of stored carbon and a rise in green house gas emission. (c) With the advent of industrialization, the rising usage of electricity and heat results in increased global warming. | |||
| Right Option : D | |||
| View Explanation | |||
Name the gas which plays major role in global warming | |||
| Right Option : C | |||
| View Explanation | |||
Why do scientists think that human - induced global warming will be more harmful to plants and animals than past, natural climate fluctuations - | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [10]
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.
Manish Kumar
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
10thA 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.
Archit Segal
7thBeing 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
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
10thMy 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.
Shivam Rana
7thAbout 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
8thMy 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
8thIt 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
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.
