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a lichen is a symbiotic association between a fungus and green algae. the green algae carry out photosynthesis and provide the fungus with sugars. what does the fungus provide the green algae in return?

a. an energy source
b. sugars from photosynthesis
c. water and minerals
d. nutrients and oxygen

The answer should be water and minerals

Explanation:In lichens (blue-green algae) the algae benefit their fungal partner by producing carbon compounds through photosynthesis and the fungal partner in return provides protection and also gather nutrients and moisture from environment

"griffith's experiment discovering the "transforming principle" in pneumococcus bacteria. griffith's experiment, reported in 1928 by frederick griffith, was the first experiment suggesting that bacteria are capable of transferring genetic information through a process known as transformation." - griffith's experiment.