Unsourced material may be challenged and removed. Environmental diseases are a direct result from the environment. This includes diseases caused by there are no incurable diseases pdf abuse, exposure to toxic chemicals, and physical factors in the environment, like UV radiation from the sun, as well as genetic predisposition. Therefore all pollution-related disease are environmental diseases, but not all environmental diseases are pollution-related diseases.
Mica carries fluoride in their structure and releases to soil when decomposes. In the dry and arid climates, fluoride concentrates on top soil and slowly dissolves in shallow groundwater. This has been the cause of high fluoride levels in drinking water where the majority of the rural Sri Lankans obtain their drinking water from backyard wells. However, in the wet zone, high rainfall effectively removes fluoride from soils where no fluorosis is evident. In some parts of Sri Lanka iodine deficiency has also been noted which has been identified as a result of iodine fixation by hydrated iron oxide found in lateritic soils in wet coastal lowlands.
The aliphatic carbon compounds can also cause environmental disease. Coast Guard-wide comprehensive system for surveillance of workplace diseases. The Diseases of Occupations, Sixth Edition, Donald Hunter, C. Stockwell JR, Adess ML, Titlow TB, Zaharias GR. Coast Guard Office of Health Services, Washington, D. This page was last edited on 2 November 2017, at 15:32. This article is about mercy killing of animals.
Euthanasia methods are designed to cause minimal pain and distress. The methods of euthanasia can be divided into pharmacological and physical methods. Acceptable pharmacological methods include injected drugs and gases that first depress the central nervous system and then cardiovascular activity. The most common methods are discussed here, but there are other acceptable methods used in different situations. Some veterinarians perform a two-stage process: an initial injection that simply renders the pet unconscious and a second shot that causes death. This allows the owner the chance to say goodbye to a live pet without their emotions stressing the pet. It also greatly mitigates any tendency toward spasm and other involuntary movement which tends to increase the emotional upset that the pet’s owner experiences.