The fact is that pollution is caused by man—by his desire(欲望) for a modern way of life. We make "increasing industrialization"(工业化) our first aim. So we are often ready to offer everything: clean air, pure water, good food, our health and the future of our children. There is...
Water pollution arises as a result of several human activities, which leads to the presence of several underisable substance in water. Major water pollutants with their sources hav been tabulates as follows: {:("Pollutant","Source"),(" Micro-organism
Indoor air pollution from sources like this can irritate your lungs and contribute to allergies and asthma. The trouble is, if you use an ordinary vacuum cleaner, you might simply be "rearranging the dirt": your cleaner will trap some of the dust inside the bag or cyclone filter but let ...
A final distinction separates contests into two types: those that require at least a minimum of physical skill and those that do not. Shuffleboard is a good example of the first; the board games Scrabble and Monopoly will do to exemplify the second. It must of course be understood that even...
Nuclear plants are expensive and take many years to construct, usually in the face of fierce public opposition. Nuclear plants can produce long-range air pollution and water pollution. Since nuclear plants need huge amounts of cooling water, they're often built by the coast—but that makes the...
Urban structure, on the other hand, relates to the structural layout of cities, which can affect land use and development patterns shaping property flood risks. These features could potentially explain the spatial inequality of property flood risk. For example, high levels of minority segregation ...
clean water pure water good food our health and the future of our children.There is a constant flow of people from the countryside into the cities eager for the benefits of our modern society.But as our technological achievements have grown in the last twenty years pollution has become a seri...
Define eutrophication and give an example of how a freshwater lake in Idaho can become eutrophic due to human activities. How does pollution in aquatic systems affecting water chemistry? List the three most important ways in which humans could use water mor...
Multi-purpose crops as maize, rice, soybean, and wheat are key in the debate concerning food, land, water and energy security and sustainability. While strong evidence exists on the effects of climate variability on the production of these crops, so far
We could, for example, use solar cells to do the electrolysis of water "for free," but we could just as easily store the same energy in batteries and use those to power our cars instead. Fuel-cell cars sound promising, but if battery cars really are better, hydrogen may turn out to ...