The pH of rain collected on a remote island in the Pacific is assumed to be unaffected by human pollution.?
818083
Rainwater will have a pH determined by its composition.  Its composition will be water (pH=7), O2, CO2, SO2, NOx,... stop me when I've mentioned something that strikes you as a product of human pollution.  There are some ultra left wing radical commie pinko pseudo scientists who LIE about pollution and say it is a GLOBAL problem.  But WE all know that we can fowl our rivers and burn our forests and nothing will be affected more than oh a couple of feet away, right?  RIGHT?!! Tha tha thats all folks.
313595
Water... its got a pH=7
628336
as opposed to polluted water?
142628
The rain become more acidic from falling through air pollutants and dissolving them, primarily sulfur dioxide.Combination of wet deposition from the atmosphere of droplets of sulfuric acid and nitric acid dissolved in rain and snow and dry deposition from the atmosphere of particles of sulfate and nitrate salts. These acids and salts are formed when water vapor in the air reacts with the air pollutants sulfur dioxide (SO2) and nitrogen dioxide(NO2).\n\nBecause of these ingredients, the acid rain can effect the mushroom's growth or development. In certain spesies, such as Amanita muscaria. the acid rain can inhibiting the production of the mushroom's mycelia.\n\nIn fact, according to recent report in Europe, mushroom's population is decreasing in the past 50 years, specificly in 10 of 18 countries.
439975
Acid rain is caused by the combustion of fossil fuels, primarily the burning of coal but gasoline combustion also contributes. Burning of fossil fuels produces nitrogen oxide and sulfur dioxide which after emission transform into Sulfate and nitrate particles which combine in the air to form sulfuric and nitric acids. These acids fall to the earth as rain or other precipitation and get deposited in lakes and rivers and soil. \nA short term solution to problems associated with acid rain is to add a buffer to lakes other water sources to neutralize the acid but this is an expensive and temporary solution. The best way to prevent acid rain is to reduce emissions of the harmful substances by reducing the combustion of fossil fuels and practicing energy conservation or using other cleaner energy sources, like wind or solar power.
699329
Saturated Limewater has a pH of about 12.4 according to www.reefkeeping.com. An interesting read at 3 O'clock in the morning !!
777259
Hawaii has less pollution, better sea currents & tropical waters are generally clearer/bluer than temperate waters. There are parts of the world with nicer waters than Hawaii but in relation to California, that is how I'd best put it.
949101
That depends on the source you get it from!\n\nIn theory, water has a pH of 7.  If you could separate it from all influences, the disassociation constant of water would keep about 10^-7 M amounts of both [H+] and [OH-].  If you distill pure water and measure the pH, that's what you'll get.\n\nOver a couple hours the pH will change as the pure water absorbs carbon dioxide from the atmosphere.  This reacts with the water to form carbonic acid, lowering the pH to about 5.8.\n\nIn rain and the like, this effect has been countered, however, with other impurities that react with the carbonic acid, as well as producing their own effects.  Sea water has a pH of about 8.0, while water from streams and rain is usually closer to 7.
250805
mostly hydrogen sulphide from coal burning power plants. It dissolves in the rain to make sulphuric acid H2SO4
672291
climate varies from tropical in south to cool temperate in north \n\nair pollution from power plant emissions results in acid rain; acidification of lakes and reservoirs degrading water quality and threatening aquatic life; Japan is one of the largest consumers of fish and tropical timber, contributing to the depletion of these resources in Asia and elsewhere
392317
There's no infectious disease you can get from acid rain, but acid rain does bad things to the environment by lowering pH. It can interfere with plant growth, frog reproduction and so forth.\n\nSewage on the other hand can cause lots of things: cholera, hepatitis A, E. coli, vibriosis... it's a big list.
342414
Are you talking molecular level or physical process?\n\nWater is the bond between Hydrogen+ and two Oxygen- formulating H2O.\n\nWater as in the rain.  Evaporation is the water droplets from the sun heating up the water rising to the sky, also the plants perspire its water from the heating of the sun and rises to the sky, then condensation is the cooling of the droplets and condensing, weighs down the cloud with concentrated & heavier droplets and precipitation is the actually rain droplets falling to Earth.\n\nThe chemical process of cleaning the water to drink is the earthly cycle, but you want to go with human cleaning is the introduction of a sanitizing and killing bacteria in the water with chlorine and making it supposedly healthy with fluoride.  And a bunch of supposed microfilters to catch debris and bacteria.  Heating the water also helps clean it a little.
341666
Recently, there was a part of the island of New Guinea that was "discovered" by western scientists. However, there were natives who lived there, so somebody had been there. Other than that, the only places where no one has been to are places in the ocean and perhaps (if no tribal group has) other rain forests such as those in the Amazon River Basin.
336031
When rain drops fall through the atmosphere CO2 becomes dissolved in the water. Dissolved CO2 makes water acidic.\nCO2 is a normal component of the Earth's atmosphere, thus the rain is considered naturally acidic.
43192
Forest cover tends to create areas of groundwater recharge and generally slows runoff. Trees tend to buffer the speed which rainfall hits the ground and because they often create areas covered with organic material like leaf litter, the ground has more time to absorb rainfall before it runs off. Bare ground will be subject to erosion as well as higher rates of runoff. \n\nThe burning of trees may contribute to CO2, but is probably insignificant because it is a one time event. The removal of the trees is likely to be accompanied by a long term loss of soil organics, which will also contribute CO2 over time. The real change may be through albedo effects and changes in rainfall related to loss of trees may be an even bigger factor. In Brazil,when trees were removed to be replaced with even darker colored soil, the average temperature of the area increased by about 3 degrees C. Most cities have a heat island around them, often 10% warmer, due to changes in albedo. The lack of trees may change the rainfall patterns, and some hypotheses actually predict that even rain drop size may change. A study in Amazonia known as the Large Scale Biosphere-Atmosphere Experiment is investigating these ideas.
860854
The average Ocean pH is slightly on the caustic side.\n\nThis enables the growth of coral reefs which are basically composed of Calcium Carbonate.\n\nCoral reefs provide a haven for marine life which in turn provides food for not only for other marine life but also provides food for humans.\n\nDeforestation by Third World countries contributes to the increase of atmospheric Carbon Dioxide which in turn makes the oceans more acidic.\n\nThis is far more that all the carbon dioxide produced by world industry.\n\nThis, unfortunately, is either not known or not admitted to, by the "Kumbaya" wing of the Democrats or the Major Media.
914316
Acid rain has been shown to have adverse impacts on forests, freshwaters and soils, killing off insect and aquatic lifeforms as well as causing damage to buildings and having possible impacts on human health.\n\n\nSurface Waters and Aquatic Animals:\n\nBoth the lower pH and higher aluminium concentrations in surface water that occur as a result of acid rain can cause damage to fish and other aquatic animals. At pHs lower than 5 most fish eggs will not hatch and lower pHs can kill adult fish. As lakes become more acidic biodiversity is reduced. Acid rain has eliminated insect life and some fish species, including the brook trout in some Appalachian streams and creeks.\n\n\nSoils:\n\nSoil biology can be seriously damaged by acid rain. Some tropical microbes can quickly consume acids but other types of microbe are unable to tolerate low pHs and are killed. The enzymes of these microbes are denatured (changed in shape so they no longer function) by the acid. The hydronium ions of acid rain also mobilize toxins and leach away essential nutrients and minerals.\n\n\nForests and other vegetation:\n\nAcid rain can slow the growth of forests, cause leaves and needles to turn brown and fall off and die. In extreme cases trees or whole areas of forest can die. The death of trees is not usually a direct result of acid rain, often it weakens trees and makes them more susceptible to other threats. Damage to soils (see above) can also cause problems. High altitude forests are especially vulnerable as they are often surrounded by clouds and fog which are more acidic than rain.\n\nOther plants can also be damaged by acid rain but the effect on food crops is minimised by the application of fertilizers to replace lost nutrients. In cultivated areas, limestone may also be added to increase the ability of the soil to keep the pH stable, but this tactic is largely unusable in the case of wilderness lands. Acid Rain depletes minerals from the soil and then it stunts the growth of the plant.\n\n\nHuman health:\n\nSome scientists have suggested direct links to human health, but none have been proven. However, fine particles a large fraction of which are formed from the same gases as acid rain (sulfur dioxide and nitrogen dioxide) have been shown to cause illness and premature deaths.\n\n\nOther adverse effects:\n\nAcid rain can also cause damage to certain building materials and historical monuments. Acid rain can cause erosion on ancient and valuable statues and has caused considerable damage. This is because the sulfuric acid in the rain chemically reacts with the calcium in the stones (limestone, sandstone, marble and granite) to create gypsum, which then flakes off. This is also commonly seen on old gravestones where the acid rain can cause the inscription to become completely illegible. Acid rain also causes an increased rate of oxidation for iron. Visibility is also reduced by sulfate and nitrate in the atmosphere.