Question

Make a poster highlighting usefulness of micro-organism

Answer 1

I can't understand your question

Answer 2

micro-organisms i.e bracteria are used in the production of curd,cheese etc.... these causes the decay of dead plants and animals.while nitrogen fixing micro organisms convert nitrogen into nitrates.
In this way we can use micro-organisms.
And u draw the poster by writing these points in sides.
HOPE IT HELPS