enozs
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  • enozs
    University: University of Hong Kong
    Nationality: Hong Kong
    September 23, 2020 at 3:42 am

    It is argued whether the loss of certain species is the major environmental crisis. In my opinion, although vanishing species make a critical hit against our environment, there are lots of other questions worthy of attention.

    Loss of species, as its denotation demonstrates, jeopardizes the diversity of species. Many species are marked as endangered nowadays all over the world. Once the environment had become harsher, these species would disappear. The disappearance is liable to not only damage the local ecosystem, but also cause capital losses in the economy. For example, some places have been famous for some ubiquitous species. In other words, these species have resulted in the prosper of local tourism industry. Had they died out, these regions would lose tourists and suffer from recessions.

    However, other environmental problems are never any trifle. Climate change, specifically global warming, is the most prominent amongst them. On the one hand, global warming has been infamous for melting icebergs for a long time. Consequently, the meltwater results in rising sea levels, therefore filters out more sunlight which is critical to the ecosystem in coral reefs. On the other hand, global warming is also melting ice in the frozen soil, causing ancient germs to revive and frozen methane hydrate to melt. The latter has been recognized as one of the sources of greenhouse gases in the atmosphere.

    Considering the loss of specific species as the most conspicuous environmental challenge is neither wise nor prudent when we still have many other ecological problems to handle.

    enozs
    University: University of Hong Kong
    Nationality: Hong Kong
    September 23, 2020 at 3:12 am

    It is argued whether the loss of certain species is the major environmental crisis. In my opinion, although vanishing species make a critical hit against our environment, there are lots of other questions worthy of attention.

    Loss of species, as its denotation demonstrates, jeopardizes the diversity of species. Many species are marked as endangered nowadays all over the world. Once the environment had become harsher, these species would disappear. The disappearance is liable to bring about damage to local ecosystems, and in some cases, cause capital losses in the local economy. For example, some places have been famous for some ubiquitous species. In other words, these species have resulted in the prosper of local tourism industry. Had they died out, these regions are liable to lose tourists and suffer from recessions.

    However, other environmental problems are never any trifle. Climate change, specifically global warming, is the most prominent amongst them. On the one hand, global warming has been infamous for melting icebergs for a long time. Consequently, the meltwater results in rising sea levels, which is lethal to corals because they are absorbing less sunlight. On the other hand, global warming is also melting ice in the frozen soil, causing ancient germs to revive and frozen methane hydrate to melt. The latter has been recognized as one of the sources of greenhouse gases in the atmosphere.

    Considering the loss of specific species as the most conspicuous environmental challenge is neither wise nor prudent when we still have many other ecological problems to handle.

    enozs
    University: University of Hong Kong
    Nationality: Hong Kong
    September 17, 2020 at 1:26 am

    The pie chart demonstrates what makes farm land less productive, while the table compares how these reasons contributed to land deterioration in North America, Europe and Oceania in 1990s.

    To summary, over-grazing caused the most land degradation, though the other two reasons hold a similar proportion. The region whose land had deteriorated the most by 1990s was Europe.

    According to the pie chart, over-grazing, the most severe problem, takes part in over one third of all causes. The other two reasons, deforestation and over-farming, hold similar percentages at approximately three tenth.

    When it comes to specific regions in 1990s, all the regions succeeded in preserving more than one fourth of their land. However, Europe, as the region which suffered most from overexploitation, had almost one tenth of its land deteriorated by deforestation. In North America, where only 5% of its land degraded, over half of all the land deteriorated by unsustainable farming. Oceania is slightly different from the other regions though, with over one tenth of its land degraded by over-grazing, while no land was spoiled by farming excessively.