Goiters are often produced in the a gland that plays a key role in metabolism by secreting the thyroxine and triiodothyronine hormones.

Goiters are often produced in the Thyroid. Goiters is an enlarged thyroid gland. Goiters are believed to be painless, but Goiters make it difficult for the victim to breathe and swallow food. Goiters are caused by lack of iodine in one's diet. Treatment of Goiters depends on its size, some Goiters go away without any treatment while some goiters are treated through surgery.

Interacting group of various species in a common location. for example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.