unicellular versus multicellular orgamisms?

Question

what arguments would you use to defend that unicellular organisms are more improtant that multicellular organisms?

Answer 1

well, the planet was doing fine when it was just unicellular organisms (assuming you're not a creationist).

a partial explanation (have to leave some for you to figure out) is that unicellular organisms are responsible for breaking down matter, allowing for things like carbon cycles.

i've left "some" stuff out, but that's more than enough to point you on the way to correctly answering your question.