A group of organs that work together to perform a common function is called an)

An organ system

Explanation: An organ system is a group of bodily organs that work together in the body to perform a specific body function. Examples of organ systems are the digestive system, the circulatory system, the respiratory system. The circulatory system involves different organs such as the heart, lung, arteries and veins.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs