Acid Rainquestions Essay Example
Acid Rainquestions Essay Example

Acid Rainquestions Essay Example

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  • Pages: 5 (1329 words)
  • Published: August 9, 2018
  • Type: Analysis
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Acid Rain is a term frequently heard in the news and holds significant importance for Earth's ecosystem. It refers to rainfall that has a higher acidity level compared to normal rainfall due to excessive acid content. The issue of acid rain is complex and stems from air pollution, impacting various aspects such as weather, chemistry, soil, and the life cycles of plants and animals on land as well as aquatic organisms.

The level of acidity is determined by the pH scale, where a value of 7 is considered neutral. Any substance with a pH less than 7 is acidic, while a value above 7 indicates a basic nature. Acid rain is characterized by acidity exceeding the expected levels in non-polluted rainfall, with a pH value below 5.6 being classified as acid precipitation. However, the use of pH 5.6 as the baseline for

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identifying acid rain remains controversial.

Instances of extremely acidic rain, with pH readings as low as 2.4 (equivalent to vinegar's acidity), have been recorded during storms in New England. These intense acidic conditions have been observed to cause damage, such as leaching away the yellow color from a lime-green car's paint during a particularly acidic summer storm.

Scientific research has determined that the primary cause of acid rain is pollution resulting from the combustion of fossil fuels in the atmosphere. Sulfur dioxide (SO2) and nitrogen oxides (NOx) are the primary chemicals in the atmosphere that contribute to acid rain. When sulfur dioxide and nitrogen oxides react with water, oxygen, and oxidants in high clouds, they produce a mild solution of sulfuric acid and nitric acid. Sunlight ofte

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accelerates this reaction. Acid rain occurs when this new acidic solution mixes with precipitation such as rainwater, snow, and fog, which then falls to the Earth's surface.

However, not all of the acidity in the air becomes acid rain. Approximately half of it is deposited back to the Earth through dry deposition as gases and particles. These acidic particles can be carried by wind and settle on various surfaces including buildings, cars, homes, and trees, sometimes causing damage. Rainstorms can wash these dry deposited gases from surfaces into falling rainwater, contributing to a more acidic combination.

Sulfur dioxide plays a significant role in causing acid rain.It is emitted by natural sources like decaying vegetation, volcanoes, plankton ,decaying animals,and sea spray.The burning of fossil fuels largely contributes to about half of carbon dioxide gas emissions worldwide.

Water undergoes natural processes such as evaporation, condensation, and precipitation, which involve interactions with air particles and chemicals. These processes result in a slight increase in acidity. However, pollutants like sulfur dioxide and nitrogen oxides can intensify the acidity of precipitation. This disruption in nature's balance leads to the reduction of natural buffering chemicals and ultimately results in highly acidic rain.

Acid rain has been a long-standing concern, but recent research is starting to make progress in understanding its causes and effects. The main ecosystems affected by this environmental issue are lakes, rivers, oceans, and other aquatic systems.

There are various ways through which acidic substances enter water bodies. They can infiltrate as dry particles or take different forms such as rain, hail, dew, fog, or snowfall. Another pathway is spring acid shock when rapidly melting spring snow introduces acids into

the soil that eventually reach larger water ecosystems through smaller water sources.

This sudden influx of acids significantly alters the pH level of water. It poses a major threat during springtime when aquatic species reproduce and lay eggs for hatching purposes. The abrupt shift in pH can have severe consequences on fish offspring by potentially causing deformities or even wiping out entire species from existence.The presence of sulfuric acid in water can directly and indirectly harm fish, particularly during their primary life cycle stages. Acid rain disrupts osmoregulation in freshwater fish, hindering their absorption of essential elements like salt, oxygen, and nutrients necessary for survival. Acid molecules formed in the water lead to mucus formation in the gills, impairing oxygen absorption and potentially causing suffocation. Additionally, acid rain lowers pH levels and disturbs the salts balance in fish tissues. This can negatively affect certain species that require maintained calcium levels, damaging eggs and causing weak spines and deformities.

Although nitrogen-containing fertilizers washed into lakes stimulate algae growth and increase oxygen production beneficial for fish, acid rain causes increased deaths and depletes oxygen during decomposition. Furthermore, sulfuric acid indirectly releases lethal heavy metals like aluminum from soils into lakes, posing a threat to fish and other life forms.

The pH levels have a significant impact on various aspects of aquatic life. At pH 6, the food sources for fish die off, while at pH 5.5 adult fish experience deformities and reproductive difficulties leading to high mortality rates among young fish. When the pH drops to 5.0, the entire fish population eventually dies off, and at a pH of 4.0 all life ceases to exist.

Fish play an important role in

the food chain as they provide nourishment for other organisms.
Acid rain has negative effects on various organisms, including humans who consume fish and amphibians living in water. It toughens their membranes and causes deformities in their spines. The consequences of acid rain primarily harm water-based life forms and those who rely on seafood or aquatic organisms for sustenance. Forests and soil also suffer from acid rain's impact, resulting in significant damage. It depletes essential elements in soil and releases toxic aluminum into tree roots, leading to nutrient deprivation among trees, particularly lacking calcium and magnesium. Moreover, acid rain disrupts photosynthesis by obstructing leaf stomata with sulfuric acid. This situation worsens with severe frosts that decrease frost-hardiness due to the presence of sulfur dioxide, ammonia, and ozone in the air. Ammonia combines with sulfur dioxide to form ammonium sulfate, accumulating on tree surfaces and eventually reacting with soil to create sulfuric and nitric acid. These conditions promote the growth of fungi and pests like the ambrosia beetle attracted to chemicals released by stressed trees. Additionally, dry deposition of suspended particles from acid rain affects the atmosphere by contributing to haze formation that reduces visibility for air pilots navigating through it.Moreover, acid haze obstructs the flow of sunlight between the sun and Earth's surface. Furthermore, both dry and wet precipitation caused by acid rain impact architecture. The gradual corrosion of concrete on buildings caused by particles landing on them leads to their destruction over time and poses a potential danger to occupants. Acid rain has direct effects on individuals such as respiratory issues (e.g., asthma), dry coughs, headaches, and irritations of the eyes, nose, and throat due

to emissions of SO2 and NO2 gases.

In addition to this direct impact on humans' health, acid rain indirectly affects our food sources as it gets absorbed by fruits and animal tissues. Although these toxic metals do not directly harm animals consuming them have serious consequences for humans who consume those animals or plants contaminated with them.

Acid rain is a significant global problem that affects everyone in different ways; however, while it cannot be completely eliminated due to modern society's demands, there are measures we can take to reduce its effects such as recycling materials using carpooling instead of individual vehicles or implementing reductions in emissions from industries and transportation sectors among others effective strategies address this issue effectively in order ultimately responsibility falls upon individuals on Earth actively control this problem.

The text provides a bibliography of resources on acid rain including books and an online FAQ source.The text cites various sources on acid rain, including the book "Acid Rain Research: Do we have enough answers?" edited by G.J. Heij and J.W. Erisman, published in 1995 by Elsevier;the Comptons New Media Encyclopedia from 1996;the book "Acid Rain: The Relationship between Sources and Receptors" edited by James C. White, published in 1988 by Elsevier;and an online FAQ on acid rain available at http://ns.doe.ca/aeb/ssd/acid/acidFAQ.html.

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