global warming and acid rain pdf in hindi

Global warming and acid rain pdf in hindi

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Study of Impacts of Global Warming on Climate Change: Rise in Sea Level and Disaster Frequency

What is climate change?

Acid rain , also called acid precipitation or acid deposition , precipitation possessing a pH of about 5. In acid-sensitive landscapes, acid deposition can reduce the pH of surface waters and lower biodiversity. It weakens trees and increases their susceptibility to damage from other stressors, such as drought , extreme cold, and pests. In acid-sensitive areas, acid rain also depletes soil of important plant nutrients and buffers, such as calcium and magnesium , and can release aluminum , bound to soil particles and rock , in its toxic dissolved form.

chapter and author info

What is global warming? What causes global warming? What is climate change? Is it different from global warming? What is a climate change impact?

One of our era's greatest scourges is air pollution, on account not only of its impact on climate change but also its impact on public and individual health due to increasing morbidity and mortality. There are many pollutants that are major factors in disease in humans. Among them, Particulate Matter PM , particles of variable but very small diameter, penetrate the respiratory system via inhalation, causing respiratory and cardiovascular diseases, reproductive and central nervous system dysfunctions, and cancer. Despite the fact that ozone in the stratosphere plays a protective role against ultraviolet irradiation, it is harmful when in high concentration at ground level, also affecting the respiratory and cardiovascular system. Furthermore, nitrogen oxide, sulfur dioxide, Volatile Organic Compounds VOCs , dioxins, and polycyclic aromatic hydrocarbons PAHs are all considered air pollutants that are harmful to humans. Carbon monoxide can even provoke direct poisoning when breathed in at high levels.

Acid rain was discovered in the 19th century by Robert Angus Smith, a pharmacist from Manchester England , who measured high levels of acidity in rain falling over industrial regions of England and contrasted them to the much lower levels he observed in less polluted areas near the coast. Little attention was paid to his work until the s, when biologists noticed an alarming decline of fish populations in the lakes of southern Norway and traced the problem to acid rain. These findings spurred intense research to understand the origin of the acid rain phenomenon. Pure water has a pH of 7 determined by dissociation of H2O molecules:. Rainwater falling in the atmosphere always contains impurities, even in the absence of human influence. It equilibrates with atmospheric CO2, a weak acid, following the reactions presented in chapter From these constants and a preindustrial CO2 concentration of ppmv one calculates a rainwater pH of 5.

Study of Impacts of Global Warming on Climate Change: Rise in Sea Level and Disaster Frequency

While Covid has shaken much of human society, the threat posed by global warming has not gone away. Human activities have increased carbon dioxide emissions, driving up temperatures. Extreme weather and melting polar ice are among the possible effects. The Earth's average temperature is about 15C but has been much higher and lower in the past. There are natural fluctuations in the climate but scientists say temperatures are now rising faster than at many other times. This is linked to the greenhouse effect, which describes how the Earth's atmosphere traps some of the Sun's energy. Solar energy radiating back to space from the Earth's surface is absorbed by greenhouse gases and re-emitted in all directions.

What is climate change?

One of the most compelling reasons for studying environmental science and management is the fact that, in the view of many leading authorities, we are now experiencing an environmental crisis; indeed, many authors have claimed that the present environmental crisis is unprecedented in its magnitude, pace and severity Park Awareness of this environmental crisis has grown since the s, partly as a result of the prominence given to major so-called 'environmental' disasters such as the Sahelian droughts of the s and s and the nuclear accident at Chernobyl in Consequently, a wide range of environmental problems has emerged; those problems include anthropogenic climate change 'global warming' , the depletion of stratospheric ozone the 'ozone hole' , the acidification of surface waters 'acid rain' , the destruction of tropical forests, the depletion and extinction of species, and the precipitous decline of biodiversity.

Acid rain, or acid deposition, is a broad term that includes any form of precipitation that contains acidic components, such as sulfuric acid or nitric acid, according to the Environmental Protection Agency EPA. The precipitation is not necessarily wet or liquid; the definition includes dust, gasses, rain, snow, fog and hail. The type of acid rain that contains water is called wet deposition.

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5 comments

  • William Г. 07.04.2021 at 06:26

    Science Explorer.

    Reply
  • Axel A. 11.04.2021 at 10:48

    Acid rain is a rain or any other form of precipitation that is unusually acidic , meaning that it has elevated levels of hydrogen ions low pH.

    Reply
  • Delphine J. 12.04.2021 at 12:49

    Global Warming - Impacts and Future Perspective.

    Reply
  • Joseph R. 14.04.2021 at 18:41

    As a global environmental issue, it is frequently overshadowed by climate change. Although the problem of acid rain has been significantly reduced in some areas.

    Reply
  • Sonya G. 15.04.2021 at 16:00

    The power of your mind by pastor chris pdf file chemistry and technology of soft drinks and fruit juices pdf

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