ocr: Learning Extra - Human Factor Vocabulary List Baron People with great wealth, power, and influence in a specified sphere of activity, for example, oil barons. Biologist One who studies biology, the science of living organisms and life processes. Chico Mendez A rubber tapper whose heroic demonstrations, with union support, were successful against cattle rancher's attempts to destroy the forest. His murder by cattle ranchers made him a martyr and strengthened the conservation ethic of the Brazilian people. Clandestine Concealed or kept secret. Dung Solid animal waste. Ecosystem A community of in ...
