Air pollution control Essay Example | Topics and Well Written Essays - 1500 words

Air pollution control - Essay Example Smog is combination of smoke and fog. Smog can be seen with a human eye. It is always brownish in colour and may be seen in some areas in the shape of haze. Automobile industry has seen a lot of advancement in last few decades. Automobile and industrial fumes are the two biggest reasons for air pollution. Finally, with the integration of car emissions and industrial fumes, a new substance is created in the air, known as â€Å"Photochemical Smog†. Photochemical smog is made with the reaction between sunlight and oxides of nitrogen Air pollution has become a global problem as smoke and vehicle emissions travel very fast from one place to another. Vehicle emissions and industrial fumes are the main contributing factors towards the warming of the planet. Causes of air pollution and solutions to curtail the problem shall be discussed in the succeeding paragraphs. Vehicles and air pollution Innovations that are related to the automobile industry brought about many changes in human l ife and in the environment. Motor vehicle emissions are the major causes of polluting the air. Number vehicles in industrialized cities are increasing at a rapid speed, which is alarming for the future of life on the planet. Patrol vehicles mostly discharge two types of pollution. First is in the shape of exhaust emissions that includes carbon monoxide and oxides of nitrogen. ... Smoke coming out from the exhaust pipe of vehicle spreads incompletely burnt chemicals in the air. This causes danger to human life and rising quantity of carbon monoxide damages the plants and other vegetation. The pollution which arises from burning of gasoline in the vehicles acts as slow poison. It poisons our food and the chains of food which are related to us (Kaufman, 2004, 62,63). A research held by United States Governmental organization show that there is a much massive amount of mercury and other harmful substances present in the flesh of fish. The major cause of presence of harmful substances is the industrial pollution, which goes to air and then comes back to the streams, rivers and seas. Major causes of smoke exhaustion from a vehicle are old spark plugs, dirty air cleaner, damaged fuel filters, old piston and rings that are not working properly. Vehicles and industries produce almost 90% of world’s pollution. Therefore, vehicle pollution causes lungs cancer, re spiratory problems, urban smog and acid rain. Lead is another cause of pollution when vehicles use leaded gasoline. Lead is the major cause of hypertension and cancer. These diseases are more common in urban areas as large emission from vehicles takes place in urban areas. Vehicle emissions are the main contributors of overall warming of the planet. This global warming may cause a lot of damage to food chain. Storms, floods, rising of sea levels and fluctuating weather conditions are the outcome of global warming (Davis, 2002, 74, 75). Through the last few years, there is a rise in the temperature of the earth by one degree on the Celsius scale. The rise in the temperature caused many problems to the habitat of colder areas. The glaciers all around the world are melting day by day at a

Public health Essay Example | Topics and Well Written Essays - 250 words - 25

Public health - Essay Example Vaccines develop the tendency in the body to resist infections, and bring an overall improvement into the immune system of the body against the particular types of infections. In the past, one would frequently hear the news of someone losing life because of malaria, but today, in the omnipresence of vaccinations, such news is no more heard. I agree that participatory evaluation is inclusive of all kinds of stakeholders that a project has. This includes the people who are establishing the standards for evaluation, the people who are actually carrying it out, the people who are arranging and organizing it, the individuals responsible to retrieve information from the experts and professionals from academia and industry, the people for whom the evaluations are conducted, and the people who help convey the results of the evaluations to the concerned departments. Participatory evaluation is essentially a teamwork that requires input from all stakeholders to reach the conclusions. In effect, a holistic effort is made to obtain objective