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

Exercise 43

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.
a. Outline the general characteristics of a biogeochemical cycle.
b. Conduct additional research, and discuss two recent discoveries in the field of geomicrobiology.