Study Outline. 1  Microbiology-An Introduction. 2  Microbiology is the study of organisms too small to be clearly seen by the unaided eye (i.e., microorganisms); these include viruses, bacteria, archaea, protozoa, algae, and fungi.tudy Outline. 1  Microbiology-An Introduction. 2  Microbiology is the study of organisms too small to be clearly seen by the unaided eye (i.e., microorganisms); these include viruses, bacteria, archaea, protozoa, algae, and fungi.
Well, according to the CIA's The World Factbook, the current average human lifespan is approximately 66 and a half years. On average the current life expectancy for the world is about 67.2 years.
Lifespan is how old the average female or male will live in years for example the average lifespan in china for females is 74.5 years but of course you might live longer than â¦ that but its just an average. 21 people found this useful. Answered. In Biology.