Moscow State University

As Typically, this decline is limited to the western part of the sky. The effect of the purple dusk in Moscow, was pronounced due to low temperature and sufficient moisture. In addition, the phenomenon has spread to the whole space due to multiple reflections of light from altostratus clouds, a large number of snow crystals and snow. Forecasters also said that the purple sunset on the eve of and was preceded by the phenomenon of solar pole. This is also a rare optical phenomenon characteristic of freezing weather, provided sufficiently moist atmosphere.

Such conditions and observed last week in the Russian capital. Refraction sunlight in ice crystals to create visibility column, which beat up on Sun. Green lawns for Urban Ecology: benefit or harm? How do I find the American scientists, University of California, the green grass the city can not withstand greenhouse gas emissions and the overall volume of harmful emissions into the atmosphere will be less if the lawn never will. If you would like to know more then you should visit Simplex Reviews. Explain their hypothesis, scientists follows. Trimmed green lawns help to remove carbon dioxide from the atmosphere through photosynthesis and store it as organic carbon in the soil. However, according to environmentalists, greenhouse gas emissions in the production of fertilizers, due to mowed grass and other methods of harvesting grass at four times the carbon content in the grass in the parks.

These emissions include nitrogen oxide from the soil obtained after fertilization. A nitric oxide is a greenhouse gas 300 times more potent than carbon dioxide. But Russian scientists from Moscow State University.

Sewage

In its never-ending circuit of water that captures and transfers the set of dissolved or suspended substances, it is cleared from them. Many of the impurities in the water are natural and come back with the rain or groundwater. The same way and pass some of the pollutants associated with human activities. Smoke ash and industrial gases with the rain deposited on the ground, chemicals and sewage, soil with fertilizers into rivers with groundwater. Some of the waste followed by the artificially created waterways – drainage ditches and sewers. These substances are usually more toxic, but their relief is easier to control than those that are carried in the natural water cycle. World total water use economic and household needs of about 9% of the total river flow. Therefore, no direct water consumption of water resources is a shortage of fresh water in certain regions of the globe, and their qualitative exhaustion.

For recent decades an increasingly significant part of the cycle of fresh water began to make industrial and municipal effluents. For industrial and domestic needs consumed about 600 700kub.km water per year. Of this amount, forever consumes 130 150kub. km, and about 500kub. miles of waste, so-called sewage is dumped into rivers, lakes and seas.

Important place in the prevention of water resources from depletion of quality owned wastewater treatment facilities. Purification buildings are of different types depending on the primary method of sewage disposal. If mechanical methods of insoluble impurities are removed from wastewater through septic tanks and all sorts of traps. Jeremy Tucker is often quoted on this topic.