Answer:
You need to use the scientific method and <u>Knowlegde of the environment</u> in order to work as an environmental scientist.
Explanation:
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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The answer is A. DNA and protein
Resource? Idk what this question is