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…from 220 - 320, while bus passengers (millions) fell from 180 - 140 in the same period. Why is congestion a problem? Air pollution is a major problem particularly in cities, where the majority of pollution comes from vehicle exhausts. These contain…

…of the carelessness of mankind. There are many more factors that add to the destruction of the coral reefs, which if not stopped it will destroy all coral reefs. Things such as silt from deforested lands and pollution from crowded coastlines chokes them, and overuse…

…, building of public facilities; hospitals, schools, police stations, etc. 6) National stability COSTS 1) Over population, especially in major cities where crowding is a problem 2) Pollution associated with households and industries, including…

…to deal with the problems brought on by human technologies. Logging, overfishing, and water pollution by cattle waste, pesticides and herbicides are only a few of the difficulties salmon deal with. History Salmon began to evolve into the species around…

…as much fuel as the plants burning coal and oil. One ton of uranium produces more energy than several million tons of coal, and plutonium can produce much more energy than uranium. Also the burning of coal and oil pollute our air and the last thing we…

…that is polluted by sulphur dioxide (SO2) and nitrogen oxides (NOX) is known as acid rain. · Acidity is measured in pH units: the lower the pH, the more acidic the substance. Unpolluted rain has a pH of roughly 5.6, but there are natural variations. Acid rain…

…pollutants come from factories, power plants, automobile exhaust, chemical fertilizers, and other sources. Acid rain harms man-made objects as well as humans, animals, plants, aquatic systems, soils, forest, and etc. The list goes on and on. Acid rain reaches…

…combustion engine, however, fuel cells do not burn fuel and therefor do not produce any harmful pollutants. The second most commonly used form of producer of energy is the battery. Batteries store energy, and do not create power. They consume…

…, while one with a pH value greater than 7 is basic. Generally, the pH of 5.6 has been used as the basis in identifying acid rain. Acid rain, therefore, is defined as any rainfall that has an acidity level beyond what is expected in non-polluted rainfall…

…. Where did this new electric supply come from? Over 95 percent of our new electric supply since 1973 came from nuclear energy and coal. More than 80 new nuclear power plants have started operating since 1973. Nuclear Energy: Clean And Green Pollution…