Two or more organs working together form

Two or more organs working together form a system.

Explanation:

Biological system is an organic system, that is, it is a group of organs that together perform a certain task. Some common systems, such as those present in mammals and other animals, and seen in human anatomy, are those such as the circulatory system, the respiratory system, the nervous system, etc. A group of systems make up an organism, for example the human body.

In short, when two or more organs work together, they form a whole.

hot magma rises and pushes up toward the lithosphere, and as it cools it cycles back down toward the core to be heated again.