THE Family Planning Association of Hong Kong is one of 100 organisations co-sponsoring World Population Awareness Week, which ends tomorrow. The week is aimed at arousing public awareness of the necessity of balancing the world's population with its resources and environment. The association believes that individuals or groups can help the cause by writing letters to editors and making their opinions known on radio call-in shows. Co-sponsors can organise events such as debates, workshops and relevant films. Colleges and universities can be encouraged to host discussions and lectures.