Look for information of environmental social leaders in Colombia. Then choose one Colombian environmental social leader and write about his or her history and what had he or she done to protect the natural environments of Colombia.
For example:

Francia Elena Márquez Mina (born 1 December 1981) is a Colombian human rights and environmental activist and lawyer, who is the 13th and current Vice President of Colombia. She was born in Yolombó, a village in the Cauca Department. She first became an activist at 13, when the construction of a dam threatened her community. Before she became the vice president of Colombia she had participated in the defence of the Ovejas river, a significant water source for her community. Also, in 2009 Francia had helped lead protests against attempts by the government to evict Afro-Colombians, especially artisanal miners, from ancestral land near the town of La Toma. Besides, Márquez had organised a 350-kilometre long march from Cauca to Bogotá in 2014. The March, which consisted of 80 Afro-Colombian women, saw an increase in attention to illegal mining in Cauca, as well as the social and environmental destruction the community and suffering the illegal mining had caused. For all these reasons, I consider Francia Márque the woman I want to be one day.