In the Darfur region of the Sudan, Arab herders and African farmers have survived on the same land for generations. Although the
y live off the same land, their different histories and traditions led them to make different cultural adaptations (i.e., farming versus herding) for survival. The difference in livelihoods between the groups suggests what about culture and the physical environment?
Lichens is regarded as a mutual relationship between a mycobiont and photobiont, the relationship is targeted at enhancing their survival in extreme environments. The mycobiont is a fungal while the photobiont is usually a green alga or a mycobacterium. Each of the organism has their specific tasks; the mycobiont provides suitable habitat for the photobiont while the photobiont provide energy for the whole system.
