You are presented with the question "What do organisms cluster around in the ocean floor?" and the following answer choices: 
- kalenchoes
 - ferns
 - bacteria
 - Chimneys
 - an object
 - alveoli
 - graptolites
 - allow growth

Now knowing that organisms cluster around hydrothermal vents in the ocean floor and chimneys top some hydrothermal vents, choose the best answer.


 

    Chimneys     