You are presented with the question "What are commonly found in soil and water?" and the following answer choices: 
- chlorofluorocarbons
 - space
 - cyanobacteria
 - humans
 - bacteria
 - Organic compounds
 - planets
 - hydrocarbons

Now knowing that endospores are commonly found in soil and water and exospores and endospores are produced by some members of the cyanobacteria, choose the best answer.


 

   cyanobacteria      