An association between fungi and algae is called: a. lichen c. spore b. mycorrhiza d. yeast

The answer is A.

Fungi and algae enter in a symbiotic relationship called Lichen.

A association between fungi and algae is called lichen.

A lichen looks like a dry algae (algae characteristic) and grows on fertile ground and trees (fungi characteristic). The relationship between both organisms is symbiotic.

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explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.