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help need ASAP please?
ok ive been stuck on these biology questions for like an hour and i need help.
1. differentiate the roles of the fungus and the alga (also called cyanobacterium) in lichens
2. Speculate about the importance of harmful fungi in ecosystems
3.contrast saprophytic , parasitic, and mutualistic fungi
4. what is lichen? include the term symbiotic in your answer
i have been searching through my text book and cant find anything hopefully someone can help since its due tomorrow :P please help thank you