In the case study of the amboseli national reserve, scientists were trying to determine a cause for the loss of woodland habitat at the foot of mt. kilimanjaro. after years of study, they concluded that the loss of habitat was due to a) the clearing of land by farmers b) the overgrazing of herds by maasai peoples c) the consumption of fever tree bark by elephants d) the complex interaction between rainfall, soil salinity, and other factors