Short Essay: There are six criteria air pollutants monitored by the US EPA under the Clean Air Act. Describe two of them in detail (what they are, where they come from, why they are harmful).

What are the three potential consequences of a point mutation in a microbe? How would you assess the consequence of a microbe?

Which theory was disproven first? The theory of spontaneous generation or miasma theory. Describe an experiment that disproved each theory.

What event led to the global spread of SARS in the spring of 2003?

In what year were bacteriophages identified?

Short Essay: Explain the concept of herd immunity.  When has it protected us in the past?  When has it let us down?  What are some barriers to herd immunity?  Specifically discuss herd immunity and the corona virus.

Short Essay:  What is happening to Louisiana?  Explain the scenario above based on concepts you have learned in these chapters.  Be sure to include a discussion of the Mississippi River watershed in the explanation.

How would you be able to test whether a new road surface is impervious?

The oldest prokaryote fossils date back to approximately 3. 4-3.6 billion years ago

CFU is an abbreviation that stands for __________.