Burton's Microbiology for the Health Sciences 9th Edition by Janet Duben-Engelkirk, Paul Engelkirk

تمرين 1

The term that best describes a symbiotic relationship in which two different microorganisms occupy the same ecologic niche, but have absolutely no effect on each other is:
a. commensalism.
b. mutualism.
c. neutralism.
d. parasitism.