Environmental cause over the world of luxury

Richard Soetjijo, 9A

Sports cars to large malls and office buildings, the world of luxury dominates all things in the modern society from retail industries, clothing factories as well as the infamous phone industry. This tells us that the production of fumes from factories all over the world has increased by a percentage over the years, as shown by aqicn.org/map/ the majority of south east asian countries mainly in China have a very unhealthy atmosphere in 2015 as compared to it late back at the early 2000.

We all might ask ourselves, what might caused this sudden increase towards china where other countries have only increased by just a small fraction over a long period of time?Currently China is one of the fastest economically growing country in the world having little to lose over the income and profit they are getting,but because of this, cases such as thick clouds of black air have occured around china(as well as India). This certainly means that the deforestation of tree’s as well as the smelting of iron has produced the smoke we are facing now and has increased over a long period of time.

But then again what makes china different from other Western countries? Continue reading

Water Pollution

Sophia Jaury, 9B

Main Cause

The first cause of water pollution is agriculture. On farms, farmers sprays chemical pesticides on the crops the grow, so that they can get rid of the pests, to increase their crop yields and farm outputs. But then, the pesticides that are not absorbed by the plants are washed from the land and percolate into groundwater, which creates water pollution.

The second cause is domestic waste, which is human waste. Human waste carries a lot of pathogenic (disease producing) micro-organism. Domestic waste also includes detergents, metals, and many more product containing toxic chemical.

The third one is industry. Industry processing metal ores, metal-using industries, and the leaching of metals from waste. Among the metals detected most are mercury, copper, manganese, nickel, chromium, lead, and arsenic.

Now, the regulations exist and are enforced, for domestic and industrial waste to be treated before being released.

Consequences of water pollution

Eutrophication: Eutrophication is the process by which a water ecosystem increases in productivity, leading to the formation of algal blooms. This is due to increased nutrient input, often nitrogen and phosphorus from human sources. In extreme cases of eutrophication, rivers and lakes are no longer able to support fish life, because the fishes got a lack of oxygen.     How does eutrophication affects the natural water ecosystem?

-Fertilizer and animal waste from farms

-Enriched nutrient content in rivers and lakes (eutrophication)

-Algae grow fast and multiply

-When algae decay and die they are broken up by decomposers

-Decomposition of dead bodies uses up oxygen

-Fish die due to lack of  O2

Water pollution can also cause sickness and diarrhea. On a longer term damage, it can cause developments on certain cancers, such as skin cancer. For human health, the metals of greatest concern are probably lead, mercury, arsenic, and cadmium. If the water have polluted the drinking water supplies also, such as arsenic and mercury, which is poisonous, it can cause brain damage if we consume it on a high level (consume lots of it)

Ways of improving water quality and supply

To improve the quality of water, we should cut the sources of pollution, such as, make sure that there are no chemical pesticides or human and industrial waste that comes in the water supply, and allows time for nature to take its course and repair the damage by itself, without is interfering.

The easiest way that we can do is, replacing domestic detergents by soap. If a lot of people are doing this, it would surely deplete the water pollution level.

Providing clean water to rural areas in developing countries

International awareness of the importance of improving access to safe water for millions of people in developing countries has been increased by the work of charities such as water aid and by organizations like the UN (United Nations).

By providing clean water supply in homes, more time is spent on productive activities, such as, they do not have to walk pass, through rivers just to get a clean water supply, for example, to wash their eating utensils. By providing clean water, they can use their time more efficiently. And also, people who had migrated to the cities are coming back to the village, because the living standard has improved.

There are lots of fishes in the sea? Not anymore.

Silvia Chalista, 9A

Billions of people rely on fishes for their source of protein, and fishing is a source of income for some. As humans, we’ve always thought that the sea has unlimited supply for food, enough for everyone, but with unsustainable fishing practices, fish stocks are being pushed to the point of collapse.

Overfishing –  the process where fishermans goes fishing so much that the fish cannont sustain their population. This is usually caused by the high demands of fishes. Most experts believes it started from around the 1950s, or 60s. With the help of technology, bigger boats, and machineries, fishermans can track fishes easily, catch a lot of fishes before going back, and are able to carry heavier fishes. This will absolutely lead to overfishing, especially with fishermans competing against each other to catch the most fishes.

Is this a problem? Obviously. The State of World Fisheries and Aquaculture (SOFIA) is the flagship publication of the FAO Fisheries and Aquaculture Department. This gives data every 2 years on capture of fisheries and aquaculture. According to a SOFIA report:

  • 52% of fish stocks are fully exploited
  • 20% are moderately exploited
  • 17% are overexploited
  • 7% are depleted
  • 1% is recovering from depletion

The decreasing number of these top predator species can cause a change in the entire oceans ecosystems as fishes will need to be replaced with smaller, plankton-eating fish as there’s not enough fish stock to even feed to predators in the ocean ecosystem.

What will happen if this continues? Continue reading