Fact 1: Organisms cluster around hydrothermal vents in the ocean floor.

Fact 2: Bacteria that have been found at hydrothermal vents are of great interest.

Given the two facts above, answer the question "What are on the ocean floor?" with the following options: 
- alveoli
 - bacteria
 - animals
 - stations
 - body water
 - mines
 - barnacles
 - alluvial


 

  bacteria       