In modern times, over 90% of atmospheric lead poisoning comes from car exhausts, as a result of the burning of leaded petrol. Lead poisoning is therefore a particularly serious threat in cities, especially to young children who live near busy city streets. But atmospheric lead pollution is even having a global effect. (Williams, 1982, p. 83)
In the current era, more than 90% of the symptoms of lead poisoning in the atmosphere comes from automobile exhaust gas resulting from the combustion of the fuel with lead compounds. But the atmosphere was pollution has affected all over the world.
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