The Negative Effects of Land Subsidence on Agriculture LAND SUBSIDENCE - WHAT IS IT AND WHY IS IT IMPORTANT? Land subsidence is a condition in which there is a loss of support from water pressure below the ground. As we withdraw ground water and the water table drops‚ the soil collapses‚ compacts‚ and drops resulting in the decrease of land-surface elevation. Subsidence causes permanent inundation of land‚ aggravates flooding‚ changes topographic gradients‚ ruptures the land surface‚ and reduces
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Noise Pollution Noise pollution is not a necessary price to pay for living in an industrial society. Much can be done to reduce the severity of the problem. For example‚ vehicles and other machines can be built to produce less noise. Four-cycle engines can replace much noisier two-cycle engines in such products as lawnmowers‚ motorboats‚ and jet skis. Labels that indicate the noise levels of appliances and tools can help consumers avoid noisy products and choose quieter alternatives. Even
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Human health effects of air pollution * Marilena Kampa ‚ * Elias Castanas‚ * Laboratory of Experimental Endocrinology‚ University of Crete‚ School of Medicine‚ P.O. Box 2208‚ Heraklion‚ 71003‚ Greece * http://dx.doi.org/10.1016/j.envpol.2007.06.012‚ How to Cite or Link Using DOI * Permissions & Reprints Abstract Hazardous chemicals escape to the environment by a number of natural and/or anthropogenic activities and may cause adverse effects on human health and the environment
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Air pollution is the introduction of chemicals‚ particulates‚ biological materials‚ or other harmful materials into the Earth’s atmosphere‚ possibly causing disease‚ death to humans‚ damage to other living organisms such as food crops‚ or the natural or built environment. The atmosphere is a complex natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth’s
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Noise Pollution The nature of sound Sound‚ a manifestation of vibration‚ travels in wave patterns through solids‚ liquids and gases. The waves‚ caused by vibration of the molecules‚ follow sine functions‚ typified by the amplitude and wavelength (or frequency) Sound waves of equal amplitude with increasing frequency from top to bottom Reflecting on noise “Noise" derived from "nausea‚" meaning seasickness Noise is among the most pervasive pollutants today Noise is unavoidable for many
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SOUND POLLUTION NOISE CONTROL Noise has the potential to impact on us all every day‚ in different ways. Any form of noise can be considered pollution if it causes annoyance‚ sleeplessness‚ fright‚ or any other stress reaction. noise is transient; once it stops‚ the environment is free of it we can measure individual sounds that may damage human hearing‚ but it is difficult to monitor cumulative exposure to noise or to determine just how much is too much the definition of noise itself is highly
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Main effects of sound pollution • Deafness‚ temporary or permanent‚ is one of the most prevalent effects of noise pollution. Mechanics‚ locomotive drivers‚ telephone operators etc all have their hearing impairment. • The first and foremost effect of noise is a decrease in the efficiency in working. Research has proved the fact that human efficiency increases with noise reduction. • Too much of noise disturbs the rhythms of working‚ thereby affecting the concentration required for doing a
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Light pollution Light pollution‚ also known as photo pollution or luminous pollution‚ is excessive artificial light. This phenomenon is pronounced around urban centers‚ where city lights diminish the view of stars and planets. In addition to brightened skies around cities‚ light pollution also refers to any outdoor light that creates glare and interferes with the natural night environment. Cause Light pollution results from outdoor lights aimed
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WHAT YOU CAN DO ABOUT PLASTIC POLLUTION Plastic bags and bottles‚ like all forms of plastic‚ create significant environmental and economic burdens. They consume growing amounts of energy and other natural resources‚ degrading the environment in numerous ways. In addition to using up fossil fuels and other resources‚ plastic products create litter‚ hurt marine life‚ and threaten the basis of life on earth. We are producing over 25 million tons of plastics per year in the United States‚ a trivial
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and think carefully in a quiet place. Noise Pollution can be defined as unwanted or offensive sound that unreasonably intrude into our daily activities. In urban areas noise pollution is everywhere‚ whether we like it or not this is part of everyday life. If the ears was irritated to the sound it is called noise. This is defined a form of air pollution that is audible unwanted sound that poses a threat to a person’s health and well- being. This pollution has many sources from different things such
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