Question

how the fungus and alge relationship affects the population of organisms​

Answer 1

Explanation:

The symbiotic relationship of fungi and algae is called lichen. In this mutual relationship fungi provides shelter while algae being an autotroph provides food.

Talking about how it affects, It is not harmful for human beings.

And if you see lichen anywhere around so Congratulations there is less pollution in your city.

Because lichens don't grow in pollution.

Hope you find it useful.

Lil-Zyush :-)