Commentulism: one organism has benifit, other no affect.
Mutualism: both organisms have benifit.
14. Staphylococcus
19. Enteric
21. Bacteria
23. Facultative
25. Yogurt
27. Glycocalyx
28. Antibiotic
There are several stages but the crossing over starts on the second stage. And the actual crossing sides happens on the following stage. Hope this helped :)
