act three survival of the fittest brazil nut family : lecythidaceae genus : bertholletia species : excelsa common names : brazil nut , castanheiro do para , para-nut , creamnut , castana-de-para , castana-de-brazil parts used : nut , seed oil properties/actions : emollient , nutritive , antioxidant , insecticide eight village august 13 , noon amazon jungle frowning , nate caught the line and secured it to a mangrove tree .