Question

WHAT DO U MEAN BY LICHENS

Answer 1

a simple slow-growing plant which typically forms a low crust-like, leaf-like, or branching growth on rocks, walls, and trees.are lichens

Answer 2

Hi friend!!
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A Simple explanation for Lichens.

Lichens is nothing but, it is just known for a combination of an alga and a fungus.

This Lichens are used to make Litmus Papers mostly.
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Hope this helps!

Regards:
crystinia