R. Emilio Yarad A. 1. Competition When there are droughts, zebras die so this creates competition with lions and hyenas. 2. Grazing Grassland that is suitable for pasture. 3. Predation A form of relationship between two organisms of unlike species in which one of them acts as the predator and captures and feeds on the other organism, which is served as the prey. R. Emilio Yarad A. 4. Parasitism A form of symbiosis in which one organism benefits at the expense of another organism usually of different species. The association may also lead to the injury of the host.