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.
Making the world better, one answer at a time. Pathogenic diseases are caused by what is called a pathogen. Pathogens are parasitic organisms that cause disease int heir host.There are five different groups of pathogens: Viruses, bacteria, fungi, protozoans and parasitic worms. Deficiency diseases are just as the name suggests.They are caused by a deficiency of a particular nutrient in the diet. Hereditary diseases are passed on through generations via their genes.here are five different groups of pathogens: Viruses, bacteria, fungi, protozoans and parasitic worms. Deficiency diseases are just as the name suggests. They are caused by a deficiency of a particular nutrient in the diet.