Microbiology: A Systems Approach 4th Edition by Marjorie Kelly Cowan

Exercise 36

Critical thinking is the ability to reason and solve problems using facts and concepts. These questions can be approached from a number of angles and, in most cases, they do not have a single correct answer.
Provide evidence in support of or refuting the following statement: Microbial life can exist in the complete absence of sunlight or organic nutrients.