The most common subjects in cave painting are 

This object depicts

These works are the product of which culture?  

Zoroastrianism describes

Describe the levels of organization of the body.  

What is an acceptable secondary source that you can cite in your paper?

When a normally commensal bacteria causes an infection because the host is immunocompromised or the bacteria is found in a different location, it is called a(n) opportunistic pathogen.

Many people from a western culture are afraid or disgusted by the thought of “germs” because:

__________________ are live microorganisms which, when taken in adequate amounts, confer health benefits on the host.

The probiotic market is well regulated by the FDA.