Define the term insolation
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There are three meanings.

1. the process or fact of isolating or being isolated.
2. denoting a hospital or ward for patients with contagious or infectious diseases.
3. an instance of isolating something, especially a compound or microorganism.

Ibelieve it would be religious 

According to new research, more than 5..5 million deaths are associated with polluted air. hope this : ).