Current Environmental Issues

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http://download.nos.org/333courseE/14.pdf

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http://www.dphu.org/uploads/attachements/books/books_4224_0.pdf

http://ncert.nic.in/ncerts/l/lebo116.pdf

http://download.nos.org/333courseE/14.pdf


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  1. Unknown6 August 2017 at 23:33

    ID: 15334005
    Name : Carine M

    Here are 10 significant current environmental issues, where human beings play an important role in its cause.

    1. Pollution: More than half of the human population knows what is pollution, but we are still not ready to face its damaging consequences. Pollution is not only limited to water, soil and noise but has extended to light, visual, point and non-point sources. Human beings and their actions are majorly responsible for causing all types of pollution. Water pollution is essentially cause by oil spills, urban runoff and ocean dumping. Air pollution rises from burning of fossil fuels, hydraulic fracturing and gases emitted by vehicles.

    2. Climate Change: Climate change today is less of a natural process. It is rapidly occurring due to the ill effects of human actions responsible for disturbing and harmful out comings such as global warming, greenhouse effect, urban heat, coal industry etc. Climate change is not only changing the overall weather scenario, but has larger and harmful effects.

    3. Global Warming: Global warming is another environmental issue which is increase in earth’s temperature due to effect of greenhouse gases called carbon dioxide, methane, water vapor and other gases. These gases possess heat trapping capacity that are needed to create greenhouse effect so that this planet remains warm for people to survive.

    4. Deforestation: With population growing at a rapid pace, the demand for food, shelter and cloth has almost tripled in last few decades. To overcome growing demand, a direct action that we have come to recognize as “Deforestation” occurs. Deforestation means, clearing of forests or green cover for means of agriculture, industrial or urban use.

    5. Overpopulation: This is a never-ending human tragedy which is responsible for causing all types of environmental issues. Water pollution, resources crisis, gender imbalance, pollution, land pollution, urban sprawling, deforestation, over production are some common examples of dangerous effects cause by overpopulation. Despite efforts taken by the government in terms of family planning in many countries, over population is difficult to control at international level.

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  2. Unknown6 August 2017 at 23:34

    ID: 15334005

    6. Industrial and Household Waste: At present, tons of garbage is produced by each household each year. Items that can be recycled are sent to local recycling unit while other items become a part of the landfills or sent to third world countries. Due to increase in demand for food, shelter and house, more goods are produced. This resulted in creation of more waste that needs to be disposed of. Most waste is buried underground in landfill sites.

    7. Acid Rain: Acid rain simply means rain that is acidic in nature due to the presence of certain pollutants in the atmosphere. These pollutants come in the atmosphere due to car or industrial processes. Acid rain can occur in form of rain, snow, fog or dry material that settle to earth. Acid rain may cause due to erupting volcanoes, rotting vegetation and sea sprays that produce sulfur dioxide and fires, bacterial decomposition and lightening generate nitrogen dioxide.

    8. Ozone Layer Depletion: Ozone layer is a layer of gas that sits 25-30 km above earth’s surface. It mainly contains contain ozone which is a naturally occurring molecule containing three oxygen atoms. This layer is present in the stratosphere and prevents too many harmful UV (ultra violet) radiations from entering the earth. Ozone layer is capable of absorbing 97-99% of the harmful ultraviolet radiations that are emitted by sun.

    9. Genetic Engineering: Genetic modification of food, human and animal organs seems like the gem of science and technology but this has major harmful effects. Biotechnology is an impressive technology but limiting is use is the need of the hour. Genetic engineering is a controversial subject and has seen more ill impacts than the benefits it brings to mankind.

    10. Urban Sprawl: Not only India and China are classic examples of over population and urban sprawl leading to land degradation. Today almost all countries are using the land irresponsibly to meet the ever-growing demand of the greedy human wishes. The expansion of industrial areas has not only led to land degradation and soil pollution, but the habitat destruction is a terrible misery. Natural environment consisting of flora and fauna is indiscriminately destructed and lost completely instead of being replaced.

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  3. Unknown9 August 2017 at 10:07

    Id no. 15345045

    Environment Issues
    Environmental issues are harmful effects of human activity on the biophysical environment. Environmental protection is a practice of protecting the natural environment on individual, organizational or governmental levels, for the benefit of both the environment and humans. Environmentalism, a social and environmental movement, addresses environmental issues through advocacy, education and activism.

    The carbon dioxide equivalent of greenhouse gases (GHG) in the atmosphere has already exceeded 400 parts per million (NOAA) (with total "long-term" GHG exceeding 455 parts per million) (Intergovernmental Panel on Climate Change Report). This level is considered a tipping point. "The amount of greenhouse gas in the atmosphere is already above the threshold that can potentially cause dangerous climate change. We are already at risk of many areas of pollution...It's not next year or next decade, it's now." The UN Office for the Coordination of Humanitarian Affairs (OCHA) has stated "Climate change is not just a distant future threat. It is the main driver behind rising humanitarian needs and we are seeing its impact. The number of people affected and the damages inflicted by extreme weather has been unprecedented.

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