Ecological Relationships
One of two symbiotic relationships in the Sahara desert are between Microbes and the cactus. The relationship is commenalism because the microbes benefit by leaching onto the cactus and taking its water supply to live and the cactus in not affected due to the stolen water supply being so little. Another relationship is the one between the Algae an Fungus. The relationship is mutalism. Both benefit by the algae using photosynthesis to feed both itself and the fungus forms a protective barrier and both itself and the algae.