The positive and negative effects of cars
Advantages of cars
The cars are very useful & helpful to the human in the life , They can transport the people to important places such as the work , the hospitals & the schools , but they can also pollute & ruin the environment and they can affect on the human health .
The cars can transport the people & goods from one part of the country to the other easily , The people would be very tired from walking long distances if there were no cars , The cars help the people to go to the other places quicker .
The cars help the people to travel around with a great deal of freedom , The sports cars can do everything that the normal car can do , They can be also used for the luxury and the entertainment .
Negative effects of cars
When we increase the using of cars , The risk of traffic accidents will be increased as they are dangerous to the passengers , the pedestrians who do not use the vehicles , the drivers of the cars themselves and the other drivers on the road , The cars can kill many people in the cars crashes , They kill the pedestrians , Many people are dying each year & the others are being injured .
The cars emit the greenhouse gasses such as carbon dioxide which contribute in the global warming , Some air pollutants and the particulate matter from the cars can be deposited on the soil and the surface waters where they enter the food chain that can affect the reproductive , the respiratory , the immune and the neurological systems of animals .
Lead is a pollutant that produced from burning leaded fuel , interferes with normal red blood cell creation by reducing important enzymes in the body , Lead damages the red blood cell membranes and it obstructs with the cell metabolism , it shortens the lifespan of each individual cell and All of these harmful effects can cause Anemia .
The cars are very expensive , The car exhaust causes the chemical pollution for the air & it causes the chest & eye diseases , It causes the respiratory distress especially in the children , elderly people and those who suffer from the respiratory diseases .
The exhaust fumes from the engines of cars contain number of polluting substances such as carbon monoxide and a variety of complex hydrocarbons , Nitrogen oxides and sulfur oxides that cause the acid rain which changes the pH of the waterways & the soils and they can harm the organisms that rely on these resources .
The cars cause two types of pollution discharged which are the exhaust emissions & evaporative emissions , the exhaust emissions include dangerous gases such as carbon monoxide , oxides of nitrogen , hydrocarbons & particulates , The evaporative emissions are the vapors of fuel which are released into the atmosphere without being burnt .
They release the chemicals into the environment that cause severe harm to the human as well as the animals , They burn the nonrenewable fossil fuels , So , they cause the pollution which leads to the acid rain that can harm both the humans & the environment .
Benzene is one of the pollutants released by cars , It has been linked to lowered immunity and leukemia , The pollutants from car exhaust can also cause coughing and the breathing difficulties .
The cars cause the smoke which increase the quantity of certain toxic chemicals discharged by the vehicles into the air , the toxic chemicals from the cars can cause the severe irritation to the eyes , the nose , the throat and the lungs , They can also be absorbed into the body and they cause the deterioration in general health .