Question

what is lichens? write its cause​

Answer 1

Answer:

A lichen is a composite organism that arises from algae or cyanobacteria living among filaments of multiple fungi species in a mutualistic relationship.

Answer 2

hy

here is ur answer

lichens are bizarre organisms and no two are alikes.lichens are the complex life form that is a symbiotic partenership of two separate organisms ,a fungus & a alga .