Introduction occur Eutrophication can occur naturally over thousands

IntroductionEutrophicationWhen the environment isenriched with nutrients, it is known as eutrophication.Artificial nutrient enrichmentof an aqua system with organic materials or in organicnutrients, causing anover growth of aquatic plant life.DeforestationWhen the forest andwoodlands are entirely destroyed rapidly, it is known as deforestationGlobal warmingGlobal warming is theaverage temperature of the earth is increasedOzon depletionOzon depletion is whenthe thinning of ozon layer occursPollutionPollutions are changesthat are undesirable in the physical, chemical or biological characters of thenatural environment.

There are various types of pollution. For example;*air pollution*Water pollution*noise pollution *light pollution*radiation *solutionAcid depositionThe combustion of fossilfuels in power stations, factories, domestic boilers, and internal combustionengines releases large quantities of sulphur oxide(SO2) and oxides of nitrogen (NO2and NO) both oxides of nitrogen and sulphur dioxides combine with water vapourin the atmosphere and they form sulphuric acid and nitric acid individually.they fall on earth as acid rain.

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EutrophicationHow and why doeseutrophication occur      Eutrophication can occur naturally overthousands of years but, when excess fertilizer is added due to farming, thetime taken for the process to complete is shorter.       When it rains and the excess fertilizerssuch as nitrates are washed away to the pond. The fertilizers will favour theformation of algae on the surface of the pond.

This will prevent the aquaticplants from receiving sunlight. Soon, the aquatic plants will die.       Aquatic animals such as fish will nothave food and a certain blue-green bacteria and so produce toxins that maycause the death of fish during the growth of they will die too.     Not long after that, the algae will alsodie when all the fertilizers are used up.

                 Decomposing bacteria such assaprophytic bacteria will decompose the dead organisms and use up all theoxygen faster than it can be replenished.       This will cause the biochemical oxygendemand to increase. The pond is polluted. The process is known aseutrophication.What is biochemicaloxygen demand Effects of eutrophicationon the human As mentioned above,eutrophication pollutes the pond which effects water resources. It effects thewater quality and limits access to safe drinking.

Infants who drink water which is very high in nitrates canbecome extremely ill and even die. Source of food will also be reduced. Aquaticanimal such as fish, turtle, ducks and tadpoles will die. Further proofmentioning about this issue is stated in appendix ????      Deforestation      The permanent destruction of sources suchas forest and jungles. The most frequent ways of deforestation are burningtrees and clear cutting.

Clear cutting is when a large area of land is cut downat once.       Wildlife and plants are importantresources for humans. They provide food, plants provide oxygen which is usedfor respiration by all living things and building materials used to buildhouses.       Medicines are made mainly from living things.Medicines are a drug or otherpreparation for the treatment or prevention of disease. Example ofliving things that contributes in the making of medicines are, hippopotamus,giant yellow Israeli scorpion and horse shoe crabs.      Plants that are covered by soil will holdthe soil together and prevent it from being washed away. Landslides can occur when sloped areas becomecompletely saturated by heavy rainfall many times.

      When a forest is destroyed, the home ofmillions of animals is destroyed. The animals will have to find a new place tolive and when they don’t they will die and if this process continues, they willeventually extinct. Unlike animals, plants cannot move they don’t even have achance to survive and they just die.       According to appendix ???, over 1200 animalsand plants are endangered.

Endangered is when a species is at the urge ofextinction. Burning the forest will not only kill millions of plants andanimals but it will also cause air pollution.       As you can see, in appendix ??? there isproof that this issue is still ongoing. Halt project and mining projects inPahang. The sedimentation of residual sludge and dead plants causes the riverto become shallow.

If this carries on, there might be incidents such as flashfloods and prolonged drought may hit the area and the state in the future.      Another example, based on appendix??? , Kedahforest destruction threatens water supply. Logging and land clearing has affectedthe lives of thousands of water users including paddy farmers, in addition tothreatening the environment and causing flash floods. Deforestation forplantation development and logging has been contaminated with mud. Destructionof forest will affect the community water supply from the forest near thevillage. Soil erosion was triggered when it rains, also disrupting drainagesystem.

Rivers there also became shallow due to sedimentation. This is due tothe hills that were cleared have been left idle for long. Building new damswill not solve the arising problem because of water. Natural recourses andforest should be restored, conserved and protected for the future generation.


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