The transfer of power or authority from a central government to a lower level of government.

The process of gradually degrading or deteriorating.

धीरे-धीरे गिरावट या बिगड़ने की प्रक्रिया।

English Usage: The devolution of the environment due to pollution is a serious concern.

Hindi Usage: प्रदूषण के कारण पर्यावरण का गिरावट एक गंभीर चिंता का विषय है।