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.
1 A girl born in 2012 can expect to live to 73, a boy can expect to live to 68. 2  This is six years longer than the life expectancy for a child born in 1990. 3  Japanese women have the highest female life expectancy in the world at 87. 4  Iceland has the highest male life expectancy-the average man lives to 81.