Essay on environmental po

However human activities have in the recent times being blamed as the major contributor to the majority of the environmental problems that there are today. Among the numerous environmental issues is pollution. Human activities have been solely responsible for soil, water, and air pollution that has made the entire environment polluted.

One of the biggest problems that the world faces today is environmental pollution. The increasing demand for goods and resource consumption are destroying this world.

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The environment is deteriorating fast along with its ability to support life for future generations. Therefore, who is responsible for the deterioration of the world? Industrialized nations who contribute tons of toxic waste per day or individuals who are not aware of their impact on the environment.

According to Derrick Jensen. Introduction Environmental pollution is a major problem in the world, posing many health risks to both humans and the environment when exposed to the pollutants for long periods of time. Environmental pollution needs. Chapter 6 Environmental Pollution Control Measures While modern societies face growing concern about global environmental issues, developing countries are experiencing complex, serious and fast-growing pollution problems of their own.

The potent combination of industrialization, urban development and mass consumption trends is exacerbated by foreign companies operating with little regard for the impact on the local environment. Environmental pollution is more than just a health issue; it is a wider. Nowadays environmental pollution is one of the hottest topics in society. With continued increase. Our environment is a major aspect of our life today. Many of us don't take our Earth seriously and think that as long as pollution doesn't hurt them they can go ahead and throw garbage on the ground or spill oil down the drain.

Well to many people have that theory and they are killing off our Earth and also physically harming themselves from the air. Nonetheless, such massive growth of the nation stand widely clouded by a dark sky of biting inequality and massive concerns of environmental dilapidation.

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Biting human inequality and Environmental pollution has been for long time and continues to be a serious problem in China. These two closely tied problems are evident mostly in education, health, economic situations, politics and the Chinese labor which is more of. Environmental Pollution and Methods of Management As recent as it may seem, pollution was actually an apparent issue even for the ancient civilizations since the fire they used to cook would release particles which would pollute the surrounding atmosphere.

However, this kind of pollution that occurred in the previous civilizations did not pose much of a threat to the environment because it was very minimal. As time progressed the technological advancements that were made in the 19th and 20th centuries. Environmental Pollution Essays Words 3 Pages. Environmental Pollution Our environment is affected by our daily actions. The earth is plagued with land, air and water pollution.

Some of the problems we face on earth are: deforestation, nuclear waste, acid rain, global warming, overpopulation and some animals are endangered. Air pollution has many different sources. Power-generated plants, oil refineries, chemical plants, and steel mills contribute to about million tons of pollutants into the air every year. Automobiles account for at least 80 percent, of air pollution; the heaviest polluter.

CO has affinity for haemoglobin times more than oxygen. Haemoglobin is, therefore, unable to transport oxygen to various parts of the body. This causes suffocation. Long exposure to CO may cause dizziness, unconsciousness and even death.

Essay on Environmental Pollution

Many other air pollutants like benzene from unleaded petrol , formaldehyde and particulates like polychlorinated biphenyls PCBs toxic metals and dioxins from burning of polythene can cause mutations, reproductive problems or even cancer. Air pollutants affect plants by entering through stomata leaf pores through which gases diffuse , destroy chlorophyll and affect photosynthesis. During the day time the stomata are wide open to facilitate photosynthesis. Air pollutants during day time affect plants by entering the leaf through these stomata more than night.

Pollutants also erode waxy coating of the leaves called cuticle. Cuticle prevents excessive water loss and damage from diseases, pests, drought and frost. Damage to leaf structure causes necrosis dead areas of leaf , chlorosis loss or reduction of chlorophyll causing yellowing of leaf or epinasty downward curling of leaf , and abscission dropping of leaves. Particulates deposited on leaves can form enerustations and plug the stomata and also reduce the availability of sunlight.

The damage can result in death of the plant. SO 2 causes bleaching of leaves, chlorosis, injury and necrosis of leaves NO 2 results in increased abscission and suppressed growth. O 3 causes flecks on leaf surface, premature again, necrosis and bleaching. Peroxyacetyl nitrate PAN causes silvering of lower surface of leaf, damage to young and more sensitive leaves and suppressed growth. Fluorides cause necrosis of leaf-tip while ethylene results in epinasty, leaf abscission and dropping of flowers. Air pollutants mixing up with rain can cause high acidity lower pH in fresh water lakes.

This affects aquatic life especially fish. Some of the fresh water lakes have experienced total fish death. Because of their corrosiveness, particulates can cause damage to exposed surfaces.

IELTS / TOEFL Academic Vocabulary: Environment

Presence of SO 2 and moisture can accelerate corrosion of metallic surfaces due to formation of sulfuric acid. Metal parts of buildings, vehicles, bridges, wires and metallic railway tracks are affected. Sulfuric acid also damages buildings and causes disfigurement of statues made up of marble and limestone. Sulfuric acid formed by the atmospheric SO 2 and water vapours damages the leather binding of books. The pages of the books also become brittle.

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SO 2 can affect fabric, leather, paint and paper. Ozone in the atmosphere can crack of rubber. Nylon stockings are weakened and ultimately damaged. Tyres of various vehicles area also damaged. Oxides of nitrogen and ozone can also cause fading of cotton and rayon fibres. Organic matter which reaches water bodies is decomposed by micro-organisms present in water.

For this degradation oxygen dissolved in water is consumed. Dissolved oxygen DO is the amount of oxygen dissolved in a given quantity of water at a particular temperature and atmospheric pressure. Amount of dissolved oxygen depends on aeration, photosynthetic activity in water, respiration of animals and plants and ambient temperature.

Lower DO may be harmful to animals especially fish population. Oxygen depletion deoxygeneration helps in release of phosphates from bottom sediments and causes eutrophication. Addition of compounds containing nitrogen and phosphorus helps in the growth of algae and other plants which when die and decay consume oxygen of water. Under anaerobic conditions foul smelling gases are produced.

Excess growth or decomposition of plant material will change the concentration of CO 2 which will further change pH of water. Changes in pH, oxygen and temperature will change many physico-chemical characteristics of water. Many wastewaters especially sewage contain many pathogenic disease causing and non-pathogenic micro-organisms and many viruses. Water borne diseases like cholera, dysentery, typhoid, jaundice etc. Pollutants such as heavy metals, pesticides, cyanides and many other organic and inorganic compounds are harmful to aquatic organisms. The demand of DO increases with addition of biodegradable organic matter which is expressed as biological oxygen demand BOD.

More BOD values of any water sample are associated with poor water quality.

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The non-biodegradable toxic compounds bio-magnify in the food chain and cause toxic effects at various levels of food chain. Toxic substances polluting the water ultimately affect human health. Some heavy metals like lead, mercury and cadmium cause various types of diseases. Mercury dumped into water is transformed into water soluble methyl mercury by bacterial action.

Methyl mercury accumulates in fish. In , people in Japan suffered from numbness of body parts, vision and hearing problems and abnormal mental behaviour. This disease called Minamata disease occurred due to consumption of methyl mercury contaminated fish caught from Minamata bay in Japan. The disease claimed 50 lives and permanently paralyzed over persons. Pollution by another heavy metal cadmium had caused the disease called Itai-itai in the people of Japan. The disease was caused by cadmium contaminated rice.

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The rice fields were irrigated with effluents of zinc smelters and drainage water from mines. In this disease bones, liver, kidney, lungs, pancreas and thyroid are affected. Arsenic pollution of ground water in Bangladesh and West Bengal is causing various types of abnormalities. Nitrate when present in excess in drinking water causes blue baby syndrome or methaemoglobinemia.