How do you change your computer screen from landscape to portrait setting? My son was playing with the computer and when I looked at the screen he somehow changed it to a landscape appearance rather than standard portrait.
Lichens have been described as dual organisms because they are symbiotic associations between two (or sometimes more) entirely different types of microorganism 1  -. a fungus (termed the mycobiont). 2  a green alga or a cyanobacterium (termed the photobiont).
Lichens are a symbiotic relationship between fungus and algae. Their relationship is complex, but mutually reciprocal. The algae provides the fungus with nourishment while the fungus provides the algae with shelter so that it can grow.