Lichens have been described as "dual organisms<span>" because they are symbiotic associations between two (or sometimes more) entirely different types of microorganism - a fungus (termed the mycobiont) a green alga or a cyanobacterium (termed the photobiont).
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Answer:
I think C.............................

the answer is d.pacific ocean is the largest ocean in the world it is also the world's deepest ocean.
Hydrogen bonds are weaker than covalent bonds.