Respuesta :

groups of cells and materials surrounding them working together to perform a particular function.organ level.were different types of tissues are joined together to form organs, which are structures that are composed of two or more different tissues,they have specific  functions and usually have recognizable shapes .

hopefully that helped 

Two or more organs join together to make organ system.

What is an organ?

An organ is structure that is found in the body system, it is made of tissues that helps in performing some specialized function.

When organs come together to perform a function it is called a system.

Therefore, Two or more organs join together to make organ system.

Learn more about organ here,

https://brainly.com/question/545314

#SPJ2