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 combination of fungi and algae. The fungi uses tiny rootlets to hold onto the rock and gets some nutrients from the rock, which it shares with the algae. The algae use photosynthesis to make sugars, which it shares with the fungi. Together, the two organisms can survive where neither one could on its own.