#nature – grassroots

grass roots 

|ˈɡræs ˈˌruts| (also grassroots |ˈgrasˌro͞ots| ) pl.noun

the most basic level of an activity or organization: the whole campaign

would be conducted at the grass roots | [ as modifier ] :

trying to improve the sport’s image at the grass-roots level.

• ordinary people regarded as the main body of an organization’s