A simple definition: A web service is a function that can be accessed by other programs over the web (Http). To clarify a bit, when you create a website in PHP that outputs HTML its target is the browser and by extension the human being reading the page in the browser.
Although a lack of dietary iodine is the main cause of goiter in many parts of the world, this is not often the case in countries where iodine is routinely added to table salt and other foods. 1  Graves' disease. 2  Goiter can sometimes occur when your thyroid gland produces too much thyroid hormone (hyperthyroidism). Goiter can sometimes occur when your thyroid gland produces too much thyroid hormone (hyperthyroidism). 2  In Graves' disease, antibodies produced by your immune system mistakenly attack your thyroid gland, causing it to produce excess thyroxine.
A disease is an abnormal condition affecting the body of an organism. There are four main types of disease: pathogenic disease, deficiency disease, hereditary disease, and physiological disease.Pathogenic diseases are caused by what is called a pathogen. Pathogens are parasitic organisms that cause disease in their host.For example the pathogen e.coli which can make people ill or kill them. Deficiency diseases are caused by a deficiency of a particular nutrient in the diet.A lack of vitamin c causes scurvy. Hereditary diseases are passed on through generations via their genes, for example sickle cell disease.hysiological diseases such as diabetes can be treated by: Diet-a healthy diet is key to controlling blood sugar levels and preventing diabetes complications. Exercise-regular exercise can reduce the risk of developing complications of diabetes such as stroke and kidney failure.