Acollection of two or more types of tissue that work together to perform a specific function is what?

Organ

Explanation:

Different tissues performing various specific functions coming together to form an organ. An example is a liver. The liver have several tissues that together to help it accomplish its function. One is the hepatic tissue that makes the bile, the endothelial tissue that makes up the bile ducts and blood vessels that pass through it, Kepffer tissue that lines the liver’s vascular system to rid the blood of foreign matter, and etcetera. Several organs that perform a specif function of the body (such as respiration) are called an organ system. Tissues, on the other hand, are made up of cells specialized to perform a specific cellular function.