dispersing

She told Salon that Covington police refused to talk to her when she attempted to communicate with them about dispersing the crowd.

Weather conditions keeping warmer air above cooler air trap these pollutants and limit vertical air movement - preventing pollution from dispersing.

The mountain ranges restrict airflow and prevent pollution from dispersing.

The journalists - including French AFP news agency reporter Yasin Akgül - were also detained on charges of "participating in unarmed meetings and marches against the law and not dispersing on their own despite warnings".

Grizzly bears also bring benefits, including dispersing seeds and aerating soil.