Community can be defined as a group of living organisms present in a particular area that show interactions with each other. For example, a forest having trees, under-growing shrubs, inhabited birds and animals, and rooted in ground (soil) that contains various fungi and bacteria represent a biological community.
Thyroid disease occurs when the thyroid (a small, butterfly-shaped gland in the front of your neck) does not produce the right amount of thyroid hormone. These hormones control how your body uses energy.
