Studies of phineas gage's injury and einstein's brain have illuminated the functions of the and lobes, respectively

I believe it is the frontal and perietal lobes. Brain is a vital organ and a part of the central nervous system together with the spinal cord. Phineas Gage suffered a traumatic brain injury when an iron rod was driven through his entire skull, destroying much of his frontal lobe. The analysis of the Einsten's brain shown complexity and pattern on certain parts of the cerebral cortex that is the prefrontal cortex and the perietal lobe.

Firstly, we need to know what a healthy ecosystem is. When an ecosystem is healthy, this would mean that it could supply all the resources that all organisms present in it and with all the resources, there is diversity. Old growth forests are considered healthy because of this reason. These forests remain untouched and had remained in providing the resources needed for the organisms present in it.