How to Use "facultative" with Example Sentences

1. Method for determination of thermophilic aerobes and facultative anaerobes .
2. Isolation and characterization of nonfermentative facultative anaerobic bacteria from shiangshan wetland .
3. Any direct business or facultative reinsurance business , being general business , in relation to which the risk is underwritten in hong kong , that is to say .
4. What is a facultative parasite ?
5. Aerobic , facultative and anaerobic gram-negative bacilli .