Пре­об­ра­зуй­те, если это не­об­хо­ди­мо, слово ORGANIZE так, чтобы оно грам­ма­ти­че­ски и лек­си­че­ски со­от­вет­ство­ва­ло со­дер­жа­нию тек­ста.

The Department of the Environment works with the support of a number of voluntary _________________ which encourage young people to fight for a better environment. The success of the environmental movement often depends on people between 18 and 30, statistics say.