Acid Rain

Acid rain is a serious problem with disastrous effects. Each daythis serious problem increases, many people believe that this issueis too small to deal with right now this issue should be met headon and solved before it is too late. In the following paragraphs Iwill be discussing the impact has on the wildlife and how ouratmosphere is being destroyed by acid rain.


CAUSES

Acid rain is a cancer eating into the face of Eastern Canada andthe North Eastern United States. In Canada, the main sulphuric acidsources are non(c)ferrous smelters and power generation. On bothsides of the border, cars and trucks are the main sources fornitric acid(about 40% of the total), while power generating plantsand industrial commercial and residential fuel combustion togethercontribute most of the rest. In the air, the sulphur dioxide andnitrogen oxides can be transformed into sulphuric acid and nitricacid, and air current can send them thousands of kilometres fromthe source.When the acids fall to the earth in any form it willhave large impact on the growth or the preservation of certainwildlife.

NO DEFENCE

Areas in Ontario mainly southern regions that are near the GreatLakes, such substances as limestone or other known antacids canneutralize acids entering the body of water thereby protecting it.However, large areas of Ontario that are near the Pre(c)CambrianShield, with quartzite or granite based geology and little topsoil, there is not enough buffering capacity to neutralize evensmall amounts of acid falling on the soil and the lakes. Thereforeover time, the basic environment shifts from an alkaline to aacidic one. This is why many lakes in the Muskoka,Haliburton, Algonquin, Parry Sound and Manitoulin districts couldlose their fisheries if sulphur emissions are not reducedsubstantially.



ACID

The average mean of pH rainfall in Ontario's Muskoka(c)Haliburtonlake country ranges between 3.95 and 4.38 about 40 times moreacidic than normal rainfall, while storms in Pennsilvania haverainfall pH at 2.8 it almost has the same rating for vinegar.



Already 140 Ontario lakes are completely dead or dying. Anadditional 48 000 are sensitive and vulnerable to acid rain dueto the surrounding concentrated acidic soils.‘









ACID RAIN CONSISTS OF....?

Canada does not have as many people, power plants or automobiles asthe United States, and yet acid rain there has become so severethat Canadian government officials called it the most pressingenvironmental issue facing the nation. But it is important to bearin mind that acid rain is only one segment, of the widespreadpollution of the atmosphere facing the world. Each year the globalatmosphere is on the receiving end of 20 billion tons of carbondioxide, 130 million tons of suffer dioxide, 97 million tons ofhydrocarbons, 53 million tons of nitrogen oxides, more than threemillion tons of arsenic, cadmium, lead, mercury, nickel, zinc andother toxic metals, and a host of synthetic organic compoundsranging from polychlorinated biphenyls(PCBs) to toxaphene and otherpesticides, a number of which may be capable of causing cancer,birth defects, or genetic imbalances.



COST OF ACID RAIN

Interactions of pollutants can cause problems. In addition tocontributing to acid rain, nitrogen oxides can react withhydrocarbons to produce ozone, a major air pollutant responsible inthe United States for annual losses of $2 billion to 4.5 billionworth of wheat, corn, soyabeans, and peanuts. A wide range ofinteractions can occur many unknown with toxic metals.




In Canada, Ontario alone has lost the fish in an estimated 4000lakes and provincial authorities calculate that Ontario stands tolose the fish in 48 500 more lakes within the next twenty years ifacid rain continues at the present rate.Ontario is not alone, onNova Scotia's Eastern most shores, almost every river flowing tothe Atlantic Ocean is poisoned with acid. Further threatening a $2million a year fishing industry.





‘Acid rain is killing more than lakes. It can scar the leaves ofhardwood forest, wither ferns and lichens, accelerate the death ofconiferous needles, sterilize seeds, and weaken the forests to astate that is vulnerable to disease infestation and decay. In thesoil the acid neutralizes chemicals vital for growth, strips othersfrom the soil and carries them to the lakes and literally retardsthe respiration of the soil. The rate of forest growth in the WhiteMountains of New Hampshire has declined 18% between 1956 and 1965,time of increasingly intense acidic rainfall.Acid rain no longer falls exclusively on the lakes, forest, andthin soils of the Northeast it now covers half the continent.












EFFECTS

There is evidence that the rain is destroying the productivity