Today, the main causes of environmental pollution arise primarily from the production and use of various energy sources, then from industrial activities and, paradoxically but nevertheless importantly, from agriculture.
Each of these fundamental causes of pollution will correspond to countless sources of dispersion of pollutants. The latter take place from upstream (extractive industries) downstream, that is to say up to domestic uses, which can play in certain cases (fermentable organic matter polluting water for example). Thus, the consumption of chemicals marketed to the general public plays a significant role in the contamination of the environment, not to mention the considerable masses of fertilizers and pesticides dispersed in rural areas by agricultural activities.
The production and use of energy undeniably comes at the forefront of the causes of pollution of the labiosphere. filth strew some avenues and are even spilled into the rivers. The absence of a reliable sewerage network also leads to environmental pollution. The experts also point to the smoke emitted by vehicles and the waste generated by certain factories.
II. how does pollution affect people life
• The effects of pollution may be short or long, the severity depends on the concentration and duration of the exposure. Short-term effects of air pollution range from mild respiratory irritation to headaches and nausea. Very mild, these conditions can be serious in children and the elderly. Fossil fuel emissions are the main cause. During combustion, the sulfur dioxide is released. When inhaled, the lung tissue is damaged. Long-term effects include cancer and heart disease. The effects may be more immediate. More than four thousand people were killed in London in 1952, as a result of the Great Smog Catastrophe, a direct result of heavy pollution. While coal, emissions have declined, the US still relies heavily on energy from coal.
the water pollution
• Water pollution has many negative effects. Agricultural runoff has been identified as the main source by the US Environmental Protection Agency. The application of pesticides is a serious concern. Of the 27 most commonly used pesticides, 15 have been identified as carcinogens. Fertilizer application also has harmful effects, causing algae and invasive growth. They were allowed to do so, excessive growth can alter the chemistry of the water.
Contamination of water with mercury and heavy metals is a concern. Many of these contaminants persist in the environment, accumulating in the upper limbs of the food chain. Mercury in its most virulent, methylmercury, is very toxic. High levels of mercury are responsible for most notices to fish consumers. Pregnant woman who consume contaminated fish put their offspring at risk for undesirable neuro-developmental effects. Mercury is also known to be toxic to humans of the nervous system. It has been linked to Parkinson's disease, multiple sclerosis and heart disease. In addition, mercury has been identified by the US Geological Survey, the leading cause of contamination in the US in estuaries and lakes.
III. What to do to avaid pollution in our environment.
Very concrete preventive measures can be taken to avoid soil pollution.
Individuals must primarily take the following actions.
• Reduce as much as possible the doses of cleaning products (crockery, washing clothes, scouring the soil ...) and use the least polluting.
• Consolidate the remains of toxic or dangerous products and bring them to the container yard. Never throw them in the trash, sink, toilet or sewer!
• Avoid the use of chemicals or ashes (barbecues for example) in the garden or in the garden. It is quite possible to do without these pollutants to get a living garden and healthy vegetables.
• Refrain from all clandestine deposits, both in town and in the wild. Bulky objects must always be brought to the container yard.
• Bring old batteries that contain heavy metals to collection sites (Bebat). Never throw them in the trash or in the middle of nature.
• Oil tanks must be equipped with anti-overflows, placed in tight tanks and their tightness must be regularly checked. Be present when supplying your tank because unfortunately a fuel delivery man delivers oil from the street while the tank located in the cellar is disconnected! In case of incidents or overflows, an "intervention kit" (absorbent products ...) must be available