The 9th Arab conference on "Environment" starts here its deliberations later today under the title of "Problems of Water in the Arab region and the role of the youth." The conference is organized by the Arab Union for Youth and Environment with the participation of youth organizations from 20 Arab countries in addition to the Arab Water Council and the Arab Water Security Center in cooperation with the Islamic Educational, Scientific and Cultural Organization (ISESCO) and Egyptian Ministry of Environment under the patronage of Arab League's Secretary General Amr Mousa. The participants of the conference will tackle water problems in the light of the growing population in the Arab world.