An early biomedical treatment for mental illness called involved primitive surgery on the brain, presumably as a treatment to allow evil spirits to leave the body.

Trephining

Primitive surgery on the brain is called trephining, where hole is drill into human skull exposing the dura mater to treat mental illness related to intracranial diseases and to release pressured blood build-up from a head injury. In ancient times, burr hole was created to allow evil spirits to leave the body of a person who was behaving abnormally and the bone from the trepanned was worn to keep evil spirits away.

answer; i believe that the correct answer is; ///bodies of water store heat during the day and release it at night;

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.