Final answer:
P. intermedia, T. denticola, P. gingivalis, AA are considered facultative anaerobic colonizers that may cause gum disease in the human mouth.
Step-by-step explanation:
The bacteria mentioned, P. intermedia, T. denticola, P. gingivalis, AA, are considered facultative anaerobes or facultative anaerobic colonizers. Facultative anaerobes can survive in both the presence and absence of oxygen. In the human mouth, these bacteria may cause gum disease.