Rajamahendravaram: East Godavari District Collector Kirti Chekuri called upon tribal youth to preserve their culture and traditions while making use of the opportunities and support being provided by the government to achieve progress. The district-level World Tribal Day celebrations were held at the seminar hall on the Arts College premises here on Sunday under the aegis of the Tribal Welfare Department. Tribal communities had vast knowledge of trees, seasons, weather patterns and natural cycles as they lived closely with nature, she said. Earlier, a large awareness rally was organised from the Arts College to Kambala Cheruvu Centre to mark World Tribal Day. District Tribal Welfare Empowerment Officer K N Jyothi flagged off the rally.