Microorganisms do many things in the
World. Some of these things are:
Cause Disease-many sicknesses are
Cause by microorganisms. Organisms
That cause diseases are known as
Pathogens. The theory that
Microorganisms cause disease, the germ
Theory of disease is only 120 years old.
lmportant in Agriculture-some
microorganisms can do Nitrogen
Fixation. They take nitrogen from the air
And convert it to ammonia, which can be
Used in metabolism.